Mercurial > ~darius > hgwebdir.cgi > stm32temp
annotate hw.c @ 14:891841f5f785
Fix delay() to be accurate as measured on the cro.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Wed, 14 Nov 2012 12:24:21 +1030 |
parents | 96c345d304af |
children | afdd22502c2a |
rev | line source |
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1 #include <stdint.h> |
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2 #include <stdio.h> |
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3 #include "stm32f10x.h" |
13 | 4 |
5 #include "1wire.h" | |
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6 #include "lcd.h" |
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7 |
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8 static void hw_port_cfg(void); |
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9 |
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10 /* Wait for cnt microseconds */ |
13 | 11 void |
12 _usleep16(uint16_t cnt) { | |
13 TIM6->ARR = cnt > 3 ? cnt - 3 : cnt; | |
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14 TIM_SetCounter(TIM6, 0); |
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15 TIM_Cmd(TIM6, ENABLE); |
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16 while ((TIM6->CR1 & TIM_CR1_CEN) != 0) |
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17 ; |
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18 } |
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19 |
13 | 20 void |
21 hw_init(void) { | |
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22 hw_port_cfg(); |
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23 lcd_init(); |
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24 lcd_setpwm(1000); |
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25 } |
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26 |
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27 static void |
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28 hw_port_cfg(void) { |
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29 GPIO_InitTypeDef GPIO_InitStructure; |
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30 USART_InitTypeDef USART_InitStructure; |
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31 SPI_InitTypeDef SPI_InitStructure; |
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32 FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; |
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33 FSMC_NORSRAMTimingInitTypeDef p; |
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34 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; |
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35 |
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36 /* RTC stuff */ |
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37 /* Enable PWR and BKP clocks */ |
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38 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); |
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39 |
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40 /* Allow access to BKP Domain */ |
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41 PWR_BackupAccessCmd(ENABLE); |
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42 |
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43 /* Reset Backup Domain |
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44 * |
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45 * This resets the RTC etc back to 0 so probably only useful under user command |
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46 BKP_DeInit(); |
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47 */ |
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48 |
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49 /* Enable Low Speed External clock */ |
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50 RCC_LSEConfig(RCC_LSE_ON); |
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51 |
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52 /* Wait till LSE is ready */ |
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53 while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) |
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54 ; |
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55 |
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56 /* Select LSE as RTC Clock Source */ |
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57 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); |
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58 |
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59 /* Enable RTC Clock */ |
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60 RCC_RTCCLKCmd(ENABLE); |
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61 |
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62 /* Wait for RTC registers synchronization */ |
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63 RTC_WaitForSynchro(); |
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64 |
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65 /* Wait until last write operation on RTC registers has finished */ |
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66 RTC_WaitForLastTask(); |
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67 |
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68 /* Wait until last write operation on RTC registers has finished */ |
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69 RTC_WaitForLastTask(); |
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70 |
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71 /* Set RTC prescaler: set RTC period to 1sec */ |
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72 RTC_SetPrescaler(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */ |
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73 |
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74 /* Wait until last write operation on RTC registers has finished */ |
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75 RTC_WaitForLastTask(); |
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76 |
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77 /* Clock setup */ |
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78 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE); |
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79 |
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80 /* Port configuration */ |
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81 /* Configure USART1 TX (PA.09) as alternate function push-pull */ |
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82 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; |
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83 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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84 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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85 GPIO_Init(GPIOA, &GPIO_InitStructure); |
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86 |
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87 /* Configure USART1 RX (PA.10) as input floating */ |
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88 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; |
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89 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
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90 GPIO_Init(GPIOA, &GPIO_InitStructure); |
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91 |
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92 /* Enable GPIOB clock */ |
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93 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); |
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94 |
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95 /* Configure PB5 as output push-pull for LED */ |
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96 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
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97 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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98 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; |
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99 GPIO_Init(GPIOB, &GPIO_InitStructure); |
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100 |
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101 /* Configure PB15 as input pull-up push-pull for push button */ |
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102 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; |
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103 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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104 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; |
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105 GPIO_Init(GPIOB, &GPIO_InitStructure); |
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106 |
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107 /* USART configuration */ |
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108 /* USART1 - 115200 8n1, no flow control TX & RX enabled */ |
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109 USART_InitStructure.USART_BaudRate = 115200; |
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110 USART_InitStructure.USART_WordLength = USART_WordLength_8b; |
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111 USART_InitStructure.USART_StopBits = USART_StopBits_1; |
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112 USART_InitStructure.USART_Parity = USART_Parity_No; |
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113 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
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114 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
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115 USART_Init(USART1, &USART_InitStructure); |
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116 |
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117 /* Enable interrupts on receive data */ |
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118 USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); |
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119 |
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120 /* Enable USART */ |
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121 USART_Cmd(USART1, ENABLE); |
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122 |
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123 /* Enable FSMC clock */ |
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124 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE); |
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125 |
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126 /* Enable alternate function IO clock */ |
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127 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); |
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128 |
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129 /* Enable GPIOD clock */ |
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130 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE); |
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131 |
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132 /* Enable GPIOD clock */ |
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133 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE); |
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134 |
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135 /* Configures LCD Control lines (FSMC Pins) in alternate function Push-Pull mode. |
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136 * |
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137 * PD0(D2), PD1(D3), PD4(NOE), PD5(NWE), PD7(NE1/CS), PD8(D13), PD9(D14), |
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138 * PD10(D15), PD11(A16/RS) PD14(D0), PD15(D1) |
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139 */ |
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140 GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_7 | |
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141 GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | |
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142 GPIO_Pin_14 | GPIO_Pin_15); |
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143 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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144 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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145 GPIO_Init(GPIOD, &GPIO_InitStructure); |
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146 |
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147 /* PE7(D4), PE8(D5), PE9(D6), PE10(D7), PE11(D8), PE12(D9), PE13(D10), |
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148 * PE14(D11), PE15(D12) |
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149 */ |
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150 GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | |
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151 GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | |
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152 GPIO_Pin_15); |
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153 GPIO_Init(GPIOE, &GPIO_InitStructure); |
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154 |
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155 /* Configure backlight control (PD13/FSMC_A18 remapped to TIM4_CH2) */ |
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156 /* Enable TIM4 clock */ |
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157 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); |
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158 |
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159 /* Enable timer function |
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160 * Note source clock is SYSCLK / 2 = 36MHz |
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161 */ |
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162 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13; |
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163 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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164 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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165 GPIO_Init(GPIOD, &GPIO_InitStructure); |
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166 |
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167 /* Remap TIM4_CH2 to PD13 */ |
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168 GPIO_PinRemapConfig(GPIO_Remap_TIM4, ENABLE); |
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169 |
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170 /* Reset TIM4 */ |
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171 TIM_DeInit(TIM4); |
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172 |
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173 /* Time Base configuration */ |
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174 TIM_TimeBaseStructure.TIM_Period = 999; |
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175 TIM_TimeBaseStructure.TIM_Prescaler = 0; |
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176 TIM_TimeBaseStructure.TIM_ClockDivision = 0; |
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177 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Down; |
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178 |
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179 TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); |
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180 |
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181 /* Enable timer */ |
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182 TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); |
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183 TIM_ARRPreloadConfig(TIM4, ENABLE); |
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184 TIM_Cmd(TIM4, ENABLE); |
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185 |
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186 /* Configure reset pin (PE1) as GPIO out PP */ |
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187 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; |
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188 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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189 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; |
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190 GPIO_Init(GPIOE, &GPIO_InitStructure); |
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191 |
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192 /* Configures the Parallel interface (FSMC) for LCD (Parallel mode) */ |
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193 /* Timing configuration */ |
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194 p.FSMC_AddressSetupTime = 5; |
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195 p.FSMC_AddressHoldTime = 5; |
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196 p.FSMC_DataSetupTime = 5; |
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197 p.FSMC_BusTurnAroundDuration = 0; |
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198 p.FSMC_CLKDivision = 0; |
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199 p.FSMC_DataLatency = 0; |
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200 p.FSMC_AccessMode = FSMC_AccessMode_A; |
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201 |
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202 /* FSMC_Bank1_NORSRAM1 configured as follows: |
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203 - Data/Address MUX = Disable |
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204 - Memory Type = SRAM |
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205 - Data Width = 16bit |
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206 - Write Operation = Enable |
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207 - Extended Mode = Disable |
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208 - Asynchronous Wait = Disable */ |
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209 FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1; |
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210 FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; |
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211 FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM; |
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212 FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b; |
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213 FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable; |
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214 FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable; |
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215 FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; |
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216 FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; |
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217 FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; |
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218 FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; |
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219 FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; |
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220 FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable; |
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221 FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; |
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222 FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p; |
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223 FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p; |
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224 FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); |
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225 |
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226 /* Enable FSMC_Bank1_NORSRAM1 */ |
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227 FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE); |
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228 |
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229 /* Configure touch screen controller |
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230 * |
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231 * Connected to SPI1 which is shared with the AT45DB161D. |
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232 * |
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233 * The touch screen is selected with PB7. |
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234 * The flash chip is selected with PA4. |
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235 */ |
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236 |
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237 /* Enable SPI1 clock */ |
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238 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE); |
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239 |
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240 /* Configure MOSI, MISO and SCLK as alternate function PP */ |
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241 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7; |
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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(GPIOA, &GPIO_InitStructure); |
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245 |
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246 /* Configure flash chip select pin (PA4) as GPIO out PP */ |
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247 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
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248 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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249 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; |
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250 GPIO_Init(GPIOA, &GPIO_InitStructure); |
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251 |
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252 /* Configure touch chip select pin (PB7) as GPIO out PP */ |
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253 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; |
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254 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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255 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; |
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256 GPIO_Init(GPIOB, &GPIO_InitStructure); |
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257 |
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258 /* De-select touch & flash */ |
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259 GPIO_SetBits(GPIOA, GPIO_Pin_4); |
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260 GPIO_SetBits(GPIOB, GPIO_Pin_7); |
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261 |
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262 /* SPI1 Config */ |
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263 SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; |
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264 SPI_InitStructure.SPI_Mode = SPI_Mode_Master; |
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265 SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; |
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266 SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; |
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267 SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; |
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268 SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; |
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269 SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64; |
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270 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; |
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271 SPI_InitStructure.SPI_CRCPolynomial = 7; |
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272 SPI_Init(SPI1, &SPI_InitStructure); |
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273 |
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274 /* SPI1 enable */ |
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275 SPI_Cmd(SPI1, ENABLE); |
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276 |
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277 /* Configure TIM6 for interval timing */ |
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278 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE); |
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279 |
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280 /* Reset TIM6 */ |
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281 TIM_DeInit(TIM6); |
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282 |
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283 /* Time Base configuration */ |
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284 TIM_TimeBaseStructure.TIM_Period = 0; |
13 | 285 TIM_TimeBaseStructure.TIM_Prescaler = (SystemCoreClock / 2 / 1000000) - 1; /* 1 MHz clock */ |
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286 TIM_TimeBaseInit(TIM6, &TIM_TimeBaseStructure); |
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287 |
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288 TIM_Cmd(TIM6, DISABLE); |
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289 |
13 | 290 /* Setup for single pulse mode clear UDIS */ |
291 TIM_SelectOnePulseMode(TIM6, TIM_OPMode_Single); | |
292 TIM_UpdateDisableConfig(TIM6, DISABLE); | |
293 | |
294 /* Setup GPIO for 1-wire */ | |
295 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3; | |
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296 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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297 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; |
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298 GPIO_Init(GPIOE, &GPIO_InitStructure); |
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299 |
13 | 300 OWInit(); |
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301 |
13 | 302 #if 0 |
303 while (1) { | |
304 GPIO_SetBits(GPIOE, GPIO_Pin_2); | |
305 _usleep16(10); | |
306 GPIO_ResetBits(GPIOE, GPIO_Pin_2); | |
307 _usleep16(20); | |
308 GPIO_SetBits(GPIOE, GPIO_Pin_2); | |
309 _usleep16(30); | |
310 GPIO_ResetBits(GPIOE, GPIO_Pin_2); | |
311 _usleep16(100); | |
312 } | |
313 #endif | |
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314 } |