annotate lcd.c @ 5:efa2c22266e3

PWM control LED backlight. Not sure why the AFIO clock needs to be on for this but not, say USART.
author Daniel O'Connor <darius@dons.net.au>
date Fri, 06 Jan 2012 09:46:28 +1030
parents 2c87e30c982d
children 9404b9869c27
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3
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1 /*
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2 * Example code (I think)
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3 * ~/projects/STM32Strive/奋斗STM32开发板例程/奋斗STM32开发板例程/奋斗STM32开发板MINI/STM32奋斗版ucOS II V2.86 uCGUI 3.9 DEMO-V2/STM32奋斗版ucOS II V2.86 uCGUI 3.9 DEMO
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4 *
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5 * Schematics
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6 * Main board ~/Downloads/Strive\ Mini\ STM32\ Schematic.pdf
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7 * LCD board ~/Downloads/Strive Mini LCD STM32 Schematic.pdf
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8 * MCU reference manual
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9 * ~/Downloads/CD00171190.pdf
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10 * MCU Data sheet (pinout)
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11 * ~/Downloads/CD00191185.pdf
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12 * LCD data sheet
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13 *
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14 */
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15 /* LCD board MCU
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16 1 VCC
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17 2 TC_SCK PA5/SPI1_SCK
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18 3 GND
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19 4 TC_CS PB7/SPI1_CS3
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20 5 RST PE1 FSMC_NBL1? (unlikely)
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21 6 TC_DIN PA7/SPI1_MOSI
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22 7 nOE PD4/FSMC_nOE
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23 8 TC_DOUT PA6/SPI1_MISO
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24 9 nWR PD5/FSMC_nWE
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25 10 TC_INT PB6
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26 11 CS PD7/FSMC_NE1/FSMC_NCE2
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27 12 NC
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28 13 RS PD11/FSMC_A16
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29 14 NC
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30 15 D7 PE10/FSMC_D7
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31 16 NC
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32 17 D6 PE9/FSMC_D6
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33 18 NC
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34 19 D3 PD1/FSMC_D3
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35 20 D13 PD8/FSMC_D13
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36 21 D5 PE8/FSMC_D5
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37 22 D12 PE15/FSMC_D12
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38 23 D4 PE7/FSMC_D4
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39 24 GND
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40 25 NC
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41 26 D11 PE14/FSMC_D11
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42 27 D2 PD0/FSMC_D2
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43 28 D10 PE13/FSMC_D10
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44 29 D1 PD15/FSMC_D1
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45 30 D9 PE12/FSMC_D9
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46 31 D0 PD14/FSMC_D0
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47 32 D14 PD9/FSMC_D9
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48 33 NC
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49 34 D8 PE11/FSMC_D8
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50 35 NC
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51 36 NC
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52 37 NC
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53 38 LCD_PWM PD13/TIM4_CH2
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54 39 NC
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55 40 D15 PD10/FSMC_D15
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56 */
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57
4
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58 #include <stdio.h>
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59 #include "stm32f10x.h"
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60 #include "lcd.h"
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61
4
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62 #define Bank1_LCD_C ((uint32_t)0x60000000) /* Register Address */
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63 #define Bank1_LCD_D ((uint32_t)0x60020000) /* Data Address */
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64
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65 void
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66 LCD_WR_Reg(uint16_t index, uint16_t val) {
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67 *(__IO uint16_t *)(Bank1_LCD_C) = index;
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68 *(__IO uint16_t *)(Bank1_LCD_D) = val;
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69 }
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70
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71 uint16_t
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72 LCD_RD_Reg(uint16_t index) {
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73 *(__IO uint16_t *)(Bank1_LCD_C) = index;
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74 return(*(__IO uint16_t *)(Bank1_LCD_D));
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75 }
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76
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77 uint16_t
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78 LCD_RD_Data(int first) {
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79 uint16_t a = 0;
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80 if (first)
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81 a = *(__IO uint16_t *) (Bank1_LCD_D); /* Dummy */
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82 a = *(__IO uint16_t *) (Bank1_LCD_D); /* Read */
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83
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84 return (a);
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85 }
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86
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87 void
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88 LCD_WR_Data(uint16_t val) {
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89 *(__IO uint16_t *)(Bank1_LCD_D) = val;
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90 }
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91
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92 /* Callers imply this is in milliseconds but that seems unlikely */
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93 void
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94 Delay(__IO uint32_t nCount) {
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95 for(; nCount != 0; nCount--)
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96 ;
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97 }
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98
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99 uint8_t
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100 SPI_WriteByte(uint8_t out) {
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101 uint8_t in = 0;
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102
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103 /* Wait until the transmit buffer is empty */
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104 while (SPI_I2S_GetFlagStatus(SPI1,SPI_I2S_FLAG_TXE) == RESET)
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105 ;
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106
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107 /* Send the byte */
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108 SPI_I2S_SendData(SPI1, out);
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109
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110 /* Wait until a data is received */
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111 while (SPI_I2S_GetFlagStatus(SPI1,SPI_I2S_FLAG_RXNE) == RESET)
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112 ;
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113
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114 /* Get the received data */
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115 in = SPI_I2S_ReceiveData(SPI1);
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116
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117 /* Return the shifted data */
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118 return (in);
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119 }
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120
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121 #define TP_SELECT() GPIO_ResetBits(GPIOB, GPIO_Pin_7)
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122 #define TP_DESELECT() GPIO_SetBits(GPIOB, GPIO_Pin_7)
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123 uint16_t
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124 TPRead(uint8_t type) {
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125 uint16_t x = 0;
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126
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127 /* Select device */
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128 TP_SELECT();
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129
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130 /* Do conversion */
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131 Delay(10);
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132 SPI_WriteByte(type);
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133
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134 /* Read result */
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135 Delay(10);
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136 x = SPI_WriteByte(0x00);
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137 x <<= 8;
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138 x |= SPI_WriteByte(0x00);
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139 Delay(10);
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140
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141 /* De-select device */
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142 TP_DESELECT();
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143
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144 /* Right justify 12 bit result */
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145 x = x >> 3;
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146 return (x);
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147 }
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148
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149 #define FL_SELECT() GPIO_ResetBits(GPIOA, GPIO_Pin_4)
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150 #define FL_DESELECT() GPIO_SetBits(GPIOA, GPIO_Pin_4)
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151
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152 #define FL_READ 0x03
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153 #define FL_HSREAD 0x0b
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154 #define FL_32KERASE 0x52
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155 #define FL_64KERASE 0xd8
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156 #define FL_CHIPERASE 0x60
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157 #define FL_BYTEPROG 0x02
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158 #define FL_AAIWP 0xad
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159 #define FL_RDSR 0x05
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160 #define FL_EWSR 0x50
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161 #define FL_WRSR 0x01
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162 #define FL_WREN 0x06
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163 #define FL_WRDI 0x04
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164 #define FL_RDID 0x90
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165 #define FL_JEDECID 0x9f
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166 #define FL_EBSY 0x70
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167 #define FL_DBSY 0x80
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168
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169 uint16_t
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170 FlashReadID(void) {
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171 uint8_t fac, dev;
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172
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173 FL_SELECT(); /* Select device */
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174
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175 SPI_WriteByte(FL_RDID); /* Send command */
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176 SPI_WriteByte(0x00); /* Send address cycles (ID data starts at 0) */
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177 SPI_WriteByte(0x00);
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178 SPI_WriteByte(0x00);
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179 fac = SPI_WriteByte(0x00); /* Read ID */
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180 dev = SPI_WriteByte(0x00);
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181
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182 FL_DESELECT(); /* De-select device */
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183
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184 return fac << 8 | dev;
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185 }
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186
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187 uint8_t
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188 FlashReadStatus(void) {
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189 uint8_t status;
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190
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191 FL_SELECT(); /* Select device */
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192
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193 SPI_WriteByte(FL_RDSR); /* Send command */
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194 SPI_WriteByte(0x00); /* Send dummy byte for address cycle */
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195 status = SPI_WriteByte(0x00); /* Read status */
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196
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197 FL_DESELECT(); /* De-select device */
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198
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199 return status;
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200 }
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201
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202 void
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203 FlashWriteStatus(uint8_t status) {
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204 /* Enable status write */
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205 FL_SELECT(); /* Select device */
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206 SPI_WriteByte(FL_EWSR); /* Send command */
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207 SPI_WriteByte(0x00); /* Send data byte */
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208 FL_DESELECT();
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209
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210 /* Actually write status */
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211 FL_SELECT(); /* Re-select device for new command */
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212 SPI_WriteByte(FL_WRSR); /* Send command */
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213 SPI_WriteByte(status); /* Send data byte */
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214 FL_DESELECT(); /* De-select device */
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215 }
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216
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217 void
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218 LCD_init(void) {
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219 GPIO_InitTypeDef GPIO_InitStructure;
4
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220 SPI_InitTypeDef SPI_InitStructure;
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221 FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
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222 FSMC_NORSRAMTimingInitTypeDef p;
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223 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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224 uint16_t id;
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225
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226 /* Enable FSMC clock */
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227 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
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228
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229 /* Enable GPIOD clock */
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230 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
3
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231
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232 /* Enable alternate function IO clock */
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233 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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234
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235 /* Configures LCD Control lines (FSMC Pins) in alternate function Push-Pull mode.
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236 *
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237 * PD0(D2), PD1(D3), PD4(NOE), PD5(NWE), PD7(NE1/CS), PD8(D13), PD9(D14),
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238 * PD10(D15), PD11(A16/RS) PD14(D0), PD15(D1)
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239 */
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240 GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_7 |
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241 GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_14 | GPIO_Pin_15);
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242 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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243 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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244 GPIO_Init(GPIOD, &GPIO_InitStructure);
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245
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246 /* PE7(D4), PE8(D5), PE9(D6), PE10(D7), PE11(D8), PE12(D9), PE13(D10),
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247 * PE14(D11), PE15(D12)
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248 */
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249 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |
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250 GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
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251 GPIO_Init(GPIOE, &GPIO_InitStructure);
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252
4
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253 /* Configure backlight control (PD13/FSMC_A18 remapped to TIM4_CH2) */
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254 /* Enable TIM4 clock */
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255 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
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256
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257 /* Enable timer function
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258 * Note source clock is SYSCLK / 2 = 36MHz
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259 */
4
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260 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
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261 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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262 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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263 GPIO_Init(GPIOD, &GPIO_InitStructure);
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264
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265 /* Remap TIM4_CH2 to PD13 */
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266 GPIO_PinRemapConfig(GPIO_Remap_TIM4, ENABLE);
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267
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268 /* Reset TIM4 */
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269 TIM_DeInit(TIM4);
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270
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271 /* Time Base configuration */
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272 TIM_TimeBaseStructure.TIM_Period = 999;
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273 TIM_TimeBaseStructure.TIM_Prescaler = 0;
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274 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
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275 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Down;
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276
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diff changeset
277 TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
4
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278
5
efa2c22266e3 PWM control LED backlight.
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279 /* Init to full brightness */
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280 lcd_setpwm(1000);
4
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diff changeset
281
5
efa2c22266e3 PWM control LED backlight.
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diff changeset
282 /* Enable timer */
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diff changeset
283 TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable);
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parents: 4
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284 TIM_ARRPreloadConfig(TIM4, ENABLE);
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
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diff changeset
285 TIM_Cmd(TIM4, ENABLE);
4
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diff changeset
286
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diff changeset
287 /* Configure reset pin (PE1) as GPIO out PP */
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diff changeset
288 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
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parents: 3
diff changeset
289 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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parents: 3
diff changeset
290 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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parents: 3
diff changeset
291 GPIO_Init(GPIOE, &GPIO_InitStructure);
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292
3
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293 /* Configures the Parallel interface (FSMC) for LCD (Parallel mode) */
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diff changeset
294 /* FSMC_Bank1_NORSRAM4 timing configuration */
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295 p.FSMC_AddressSetupTime = 1;
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296 p.FSMC_AddressHoldTime = 0;
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297 p.FSMC_DataSetupTime = 2;
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298 p.FSMC_BusTurnAroundDuration = 0;
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299 p.FSMC_CLKDivision = 0;
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300 p.FSMC_DataLatency = 0;
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301 p.FSMC_AccessMode = FSMC_AccessMode_A;
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302
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303 /* FSMC_Bank1_NORSRAM4 configured as follows:
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304 - Data/Address MUX = Disable
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305 - Memory Type = SRAM
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306 - Data Width = 16bit
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307 - Write Operation = Enable
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308 - Extended Mode = Disable
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309 - Asynchronous Wait = Disable */
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310 FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
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311 FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
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312 FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
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313 FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
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314 FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
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diff changeset
315 FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
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diff changeset
316 FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
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diff changeset
317 FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
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diff changeset
318 FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
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diff changeset
319 FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
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parents:
diff changeset
320 FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
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parents:
diff changeset
321 FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
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parents:
diff changeset
322 FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
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parents:
diff changeset
323 FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
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parents:
diff changeset
324 FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
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diff changeset
325
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326 FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
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diff changeset
327
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diff changeset
328 /* Enable FSMC_Bank1_NORSRAM4 */
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diff changeset
329 FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
4
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diff changeset
330
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diff changeset
331 /* Initialise LCD panel */
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332
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diff changeset
333 /* Pull reset pin low */
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diff changeset
334 GPIO_ResetBits(GPIOE, GPIO_Pin_1);
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335 Delay(0xafff);
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diff changeset
336 GPIO_SetBits(GPIOE, GPIO_Pin_1);
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337 Delay(0xafff);
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diff changeset
338
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339 id = LCD_RD_Reg(0x00);
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340 if (id != 0x9325) {
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diff changeset
341 printf("LCD ID doesn't match, expected 0x9325 got 0x%x\r\n", id);
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342 return;
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343 }
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diff changeset
344
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345 LCD_WR_Reg(0x00e3, 0x3008); /* Set internal timing */
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parents: 3
diff changeset
346 LCD_WR_Reg(0x00e7, 0x0012); /* Set internal timing */
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parents: 3
diff changeset
347 LCD_WR_Reg(0x00ef, 0x1231); /* Set internal timing */
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parents: 3
diff changeset
348 LCD_WR_Reg(0x0000, 0x0001); /* Start Oscillation */
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parents: 3
diff changeset
349 LCD_WR_Reg(0x0001, 0x0100); /* set SS and SM bit */
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parents: 3
diff changeset
350 LCD_WR_Reg(0x0002, 0x0700); /* set 1 line inversion */
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parents: 3
diff changeset
351
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parents: 3
diff changeset
352 LCD_WR_Reg(0x0003, 0x1030); /* set GRAM write direction and BGR = 0, 262K colours, 1 transfers/pixel. */
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parents: 3
diff changeset
353 LCD_WR_Reg(0x0004, 0x0000); /* Resize register */
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parents: 3
diff changeset
354 LCD_WR_Reg(0x0008, 0x0202); /* set the back porch and front porch */
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parents: 3
diff changeset
355 LCD_WR_Reg(0x0009, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
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parents: 3
diff changeset
356 LCD_WR_Reg(0x000a, 0x0000); /* FMARK function */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
357 LCD_WR_Reg(0x000c, 0x0000); /* RGB interface setting */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
358 LCD_WR_Reg(0x000d, 0x0000); /* Frame marker Position */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
359 LCD_WR_Reg(0x000f, 0x0000); /* RGB interface polarity */
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parents: 3
diff changeset
360
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diff changeset
361 /* Power On sequence */
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parents: 3
diff changeset
362 LCD_WR_Reg(0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
363 LCD_WR_Reg(0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
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parents: 3
diff changeset
364 LCD_WR_Reg(0x0012, 0x0000); /* VREG1OUT voltage */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
365 LCD_WR_Reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
366 Delay(200); /* Dis-charge capacitor power voltage */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
367 LCD_WR_Reg(0x0010, 0x1690); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
368 LCD_WR_Reg(0x0011, 0x0227); /* R11h = 0x0221 at VCI = 3.3V, DC1[2:0], DC0[2:0], VC[2:0] */
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parents: 3
diff changeset
369 Delay(50); /* Delay 50ms */
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parents: 3
diff changeset
370 LCD_WR_Reg(0x0012, 0x001c); /* External reference voltage= Vci; */
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parents: 3
diff changeset
371 Delay(50); /* Delay 50ms */
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parents: 3
diff changeset
372 LCD_WR_Reg(0x0013, 0x1800); /* R13 = 1200 when R12 = 009D; VDV[4:0] for VCOM amplitude */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
373 LCD_WR_Reg(0x0029, 0x001c); /* R29 = 000C when R12 = 009D; VCM[5:0] for VCOMH */
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parents: 3
diff changeset
374 LCD_WR_Reg(0x002b, 0x000d); /* Frame Rate = 91Hz */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
375 Delay(50); /* Delay 50ms */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
376 LCD_WR_Reg(0x0020, 0x0000); /* GRAM horizontal Address */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
377 LCD_WR_Reg(0x0021, 0x0000); /* GRAM Vertical Address */
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parents: 3
diff changeset
378
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parents: 3
diff changeset
379 /* Adjust the Gamma Curve */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
380 LCD_WR_Reg(0x0030, 0x0007);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
381 LCD_WR_Reg(0x0031, 0x0302);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
382 LCD_WR_Reg(0x0032, 0x0105);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
383 LCD_WR_Reg(0x0035, 0x0206);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
384 LCD_WR_Reg(0x0036, 0x0808);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
385 LCD_WR_Reg(0x0037, 0x0206);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
386 LCD_WR_Reg(0x0038, 0x0504);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
387 LCD_WR_Reg(0x0039, 0x0007);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
388 LCD_WR_Reg(0x003c, 0x0105);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
389 LCD_WR_Reg(0x003d, 0x0808);
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
390
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parents: 3
diff changeset
391 /* Set GRAM area */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
392 LCD_WR_Reg(0x0050, 0x0000); /* Horizontal GRAM Start Address */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
393 LCD_WR_Reg(0x0051, 0x00ef); /* Horizontal GRAM End Address */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
394 LCD_WR_Reg(0x0052, 0x0000); /* Vertical GRAM Start Address */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
395 LCD_WR_Reg(0x0053, 0x013f); /* Vertical GRAM Start Address */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
396 LCD_WR_Reg(0x0060, 0xa700); /* Gate Scan Line */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
397 LCD_WR_Reg(0x0061, 0x0001); /* NDL,VLE, REV */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
398 LCD_WR_Reg(0x006a, 0x0000); /* set scrolling line */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
399
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
400 /* Partial Display Control */
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Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
401 LCD_WR_Reg(0x0080, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
402 LCD_WR_Reg(0x0081, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
403 LCD_WR_Reg(0x0082, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
404 LCD_WR_Reg(0x0083, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
405 LCD_WR_Reg(0x0084, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
406 LCD_WR_Reg(0x0085, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
407
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
408 /* Panel Control */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
409 LCD_WR_Reg(0x0090, 0x0010);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
410 LCD_WR_Reg(0x0092, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
411 LCD_WR_Reg(0x0093, 0x0003);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
412 LCD_WR_Reg(0x0095, 0x0110);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
413 LCD_WR_Reg(0x0097, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
414 LCD_WR_Reg(0x0098, 0x0000);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
415 LCD_WR_Reg(0x0007, 0x0133); /* 262K colour and display ON */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
416
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
417 /* Fill panel with white */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
418 LCD_WR_Reg(0x20, 0);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
419 LCD_WR_Reg(0x21, 0x013f);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
420 *(__IO uint16_t *)(Bank1_LCD_C) = 34;
5
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
421 for (uint32_t i = 0; i < 320 * 240; i++) {
4
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
422 LCD_WR_Data(0xffff);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
423 }
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
424
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
425 /* Configure touch screen controller
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
426 *
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
427 * Connected to SPI1 which is shared with the AT45DB161D.
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
428 *
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
429 * The touch screen is selected with PB7.
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
430 * The flash chip is selected with PA4.
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
431 */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
432
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
433 /* Enable SPI1 clock */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
434 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
435
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
436 /* Configure MOSI, MISO and SCLK as alternate function PP */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
437 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
438 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
439 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
440 GPIO_Init(GPIOA, &GPIO_InitStructure);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
441
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
442 /* Configure flash chip select pin (PA4) as GPIO out PP */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
443 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
444 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
445 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
446 GPIO_Init(GPIOA, &GPIO_InitStructure);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
447
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
448 /* Configure touch chip select pin (PB7) as GPIO out PP */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
449 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
450 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
451 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
452 GPIO_Init(GPIOB, &GPIO_InitStructure);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
453
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
454 /* De-select touch & flash */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
455 GPIO_SetBits(GPIOA, GPIO_Pin_4);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
456 GPIO_SetBits(GPIOB, GPIO_Pin_7);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
457
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
458 /* SPI1 Config */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
459 SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
460 SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
461 SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
462 SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
463 SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
464 SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
465 SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
466 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
467 SPI_InitStructure.SPI_CRCPolynomial = 7;
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
468 SPI_Init(SPI1, &SPI_InitStructure);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
469
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
470 /* SPI1 enable */
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
471 SPI_Cmd(SPI1, ENABLE);
2c87e30c982d Add LCD init, touch screen writing etc..
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
472
3
74e9b3baac1e Jumbo commit to make things work.
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
473 }
5
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
474
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
475 void
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
476 lcd_setpwm(uint16_t val) {
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
477 TIM_OCInitTypeDef TIM_OCInitStructure;
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
478
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
479 /* Channel 2 configuration in PWM mode */
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
480 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
481 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
482 TIM_OCInitStructure.TIM_Pulse = val;
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
483 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
484
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
485 TIM_OC2Init(TIM4, &TIM_OCInitStructure);
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
486
efa2c22266e3 PWM control LED backlight.
Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
487 }