Mercurial > ~darius > hgwebdir.cgi > stm32test

annotate main.c @ 3:74e9b3baac1e

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Jumbo commit to make things work. Note I have t
author Daniel O'Connor <darius@dons.net.au>
date Sun, 01 Jan 2012 11:01:13 +1030
parents 274e01fa5a4c
children 2c87e30c982d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include <ctype.h>
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2 #include <malloc.h>
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3 #include <stdio.h>
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4 #include <stdint.h>
3
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5 #include <time.h>
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6 #include <string.h>
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7 #include <sys/time.h>
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8 #include <stdlib.h>
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9
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10 #include "stm32f10x.h"
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11 #include "lcd.h"
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12 #include "main.h"
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13 #include "comm.h"
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14
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15 typedef struct {
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16 char buf[40];
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17 volatile uint8_t state;
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18 uint8_t len;
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19 } consbuf_t;
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20
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21 void Setup_HW(void);
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22 void NVIC_Configuration(void);
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23
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24
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25 /* Called every 1 / TICK_FREQ */
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26 #define TICK_FREQ 10000
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27 RAMFUNC void
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28 SysTick_Handler(void) {
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29 static uint32_t tick = 0;
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30 static int led = 0;
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31
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32 tick++;
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33 if (tick % 10000 == 0) {
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34 led = !led;
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35 if (led)
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36 GPIO_SetBits(GPIOB, GPIO_Pin_5);
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37 else
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38 GPIO_ResetBits(GPIOB, GPIO_Pin_5);
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39 }
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40
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41 }
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42
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43 consbuf_t cmd;
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44
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45 RAMFUNC void
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46 USART1_IRQHandler(void) {
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47 char c;
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48 int i;
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49
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50 /* Recieved data */
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51 while (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) {
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52 c = USART_ReceiveData(USART1);
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53
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54 /* End of line? */
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55 if (c == '\n' || c == '\r') {
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56 cmd.buf[cmd.state] = '\0';
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57 fputs("\r\n", stdout);
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58 cmd.len = cmd.state;
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59 cmd.state = 255;
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60 continue;
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61 }
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62
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63 /* Ctrl-w / Ctrl-u */
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64 if (c == 0x17 || c == 0x15) {
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65 for (i = 0; i < cmd.state; i++)
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66 fputs("\010\040\010", stdout);
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67 cmd.state = 0;
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68 continue;
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69 }
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70
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71 /* Backspace/delete */
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72 if (c == 0x08 || c == 0x7f) {
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73 if (cmd.state > 0) {
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74 cmd.state--;
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75 fputs("\010\040\010", stdout);
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76 }
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77 continue;
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78 }
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79
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80 /* Anything unprintable just ignore it */
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81 if (!isprint(c))
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82 continue;
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83
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84 cmd.buf[cmd.state] = tolower(c);
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85
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86 /* Echo back to the user */
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87 comm_put(cmd.buf[cmd.state]);
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88
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89 cmd.state++;
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90 /* Over flow? */
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91 if (cmd.state == ((sizeof(cmd.buf) / sizeof(cmd.buf[0])) - 1)) {
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92 fputs("\r\nLine too long", stdout);
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93 cmd.state = 0;
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94 continue;
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95 }
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96 }
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97 }
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98
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99
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100 int
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101 main(void) {
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102 char buf[40];
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103 struct tm nowtm;
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104 time_t now;
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105
0
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106 cmd.state = cmd.len = 0;
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107
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108 /* Setup USART etc */
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109 Setup_HW();
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110
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111 /* NVIC configuration */
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112 NVIC_Configuration();
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113
3
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114 /* Setup SysTick Timer rate, also enables Systick and Systick-Interrupt */
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115 if (SysTick_Config(SystemCoreClock / TICK_FREQ)) {
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116 /* Capture error */
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117 comm_puts("Can't setup SysTick\r\n");
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118 while (1)
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119 ;
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120 }
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121
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122 /* Init LCD interface */
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123 LCD_init();
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124
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125 /* Set stdout to unbuffered */
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126 setvbuf(stdout, NULL, _IONBF, 0);
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127
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128 /* Say hello */
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129 fputs("\r\nHello world\r\n", stdout);
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130
3
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131 #define Bank1_LCD_D ((uint32_t)0x60020000) //disp Data ADDR
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132 #define Bank1_LCD_C ((uint32_t)0x60000000) //disp Reg ADDR
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133
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134 while (1) {
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135 fputs("> ", stdout);
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136
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137 while (cmd.state != 255)
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138 ;
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139
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140 if (cmd.len > 0) {
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141 if (!strncmp("gc", cmd.buf, 2)) {
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142 now = time(NULL);
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143 gmtime_r(&now, &nowtm);
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144 strftime(buf, sizeof(buf) - 1, "Time is %Y/%m/%d %H:%M:%S UTC", &nowtm);
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145 printf("Time is %s (%d)\r\n", buf, (int)now);
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146 } else if (!strncmp("sc ", cmd.buf, 3)) {
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147 struct timeval tv;
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148 tv.tv_sec = atoi(cmd.buf + 3);
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149 tv.tv_usec = 0;
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150 settimeofday(&tv, NULL);
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151 } else if (!strncmp("lcd", cmd.buf, 3)) {
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152 *(__IO uint16_t *) (Bank1_LCD_C) = 0x00;
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153 printf("LCD ID = %hx\r\n", *(__IO uint16_t *) (Bank1_LCD_D));
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154 } else if (!strncmp("read", cmd.buf, 4)) {
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155 printf("PB5 = %d\r\n", GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_15));
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156 } else if (!strncmp("zz", cmd.buf, 2)) {
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157 NVIC_SystemReset();
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158 } else {
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159 printf("Unknown command\r\n");
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160 }
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161 }
0
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162 cmd.state = 0;
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163 }
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164 }
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165
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166 /* Setup hardware (USART etc) */
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167 void
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168 Setup_HW(void) {
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169 GPIO_InitTypeDef GPIO_InitStructure;
2
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170 USART_InitTypeDef USART_InitStructure;
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171
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172 /* RTC stuff */
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173 /* Enable PWR and BKP clocks */
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174 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
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175
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176 /* Allow access to BKP Domain */
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177 PWR_BackupAccessCmd(ENABLE);
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178
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179 /* Reset Backup Domain
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180 *
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181 * This resets the RTC etc back to 0 so probably only useful under user command
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182 BKP_DeInit();
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183 */
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184
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185 /* Enable LSE */
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186 RCC_LSEConfig(RCC_LSE_ON);
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187
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188 /* Wait till LSE is ready */
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189 while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
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190 ;
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191
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192 /* Select LSE as RTC Clock Source */
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193 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
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194
3
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195 /* Enable RTC Clock */
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196 RCC_RTCCLKCmd(ENABLE);
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197
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198 /* Wait for RTC registers synchronization */
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199 RTC_WaitForSynchro();
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200
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201 /* Wait until last write operation on RTC registers has finished */
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202 RTC_WaitForLastTask();
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203
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204 /* Wait until last write operation on RTC registers has finished */
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205 RTC_WaitForLastTask();
0
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206
3
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207 /* Set RTC prescaler: set RTC period to 1sec */
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208 RTC_SetPrescaler(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */
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209
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210 /* Wait until last write operation on RTC registers has finished */
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211 RTC_WaitForLastTask();
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212
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213 /* Clock setup */
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214 /* Enable clocks we need */
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215 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
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216 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
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217 RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
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218
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219 /* Port configuration */
0
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220 /* Configure USART1 TX (PA.09) as alternate function push-pull */
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221 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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222 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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223 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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224 GPIO_Init(GPIOA, &GPIO_InitStructure);
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225
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226 /* Configure USART1 RX (PA.10) as input floating */
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227 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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228 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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229 GPIO_Init(GPIOA, &GPIO_InitStructure);
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230
3
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231 /* Configure PB5 as output push-pull */
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232 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
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233 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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234 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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235 GPIO_Init(GPIOB, &GPIO_InitStructure);
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236
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237 /* Configure PB15 as input pull-up push-pull */
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238 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
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239 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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240 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
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241 GPIO_Init(GPIOB, &GPIO_InitStructure);
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242
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243 /* USART configuration */
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244 /* USART1 - 115200 8n1, no flow control TX & RX enabled */
0
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245 USART_InitStructure.USART_BaudRate = 115200;
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246 USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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247 USART_InitStructure.USART_StopBits = USART_StopBits_1;
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248 USART_InitStructure.USART_Parity = USART_Parity_No;
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249 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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250 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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251 USART_Init(USART1, &USART_InitStructure);
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252
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253 /* Enable interrupts on receive data */
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254 USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
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255
3
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256 /* Enable USART */
0
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257 USART_Cmd(USART1, ENABLE);
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258 }
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259
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260 /* Configure interrupt controller */
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261 #ifdef VECT_TAB_RAM
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262 /* vector-offset (TBLOFF) from bottom of SRAM. defined in linker script */
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263 extern uint32_t _isr_vectorsram_offs;
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264 #else
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265 extern uint32_t _isr_vectorsflash_offs;
2
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266 #endif
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267
0
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268 void
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269 NVIC_Configuration(void) {
2
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270 NVIC_InitTypeDef NVIC_InitStructure;
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271
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272 #ifdef VECT_TAB_RAM
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273 /* Set the Vector Table base location at 0x20000000+_isr_vectorsram_offs */
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274 NVIC_SetVectorTable(NVIC_VectTab_RAM, (uint32_t)&_isr_vectorsram_offs);
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275 #else
0
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276 /* Set the Vector Table base location at 0x08000000+_isr_vectorsflash_offs */
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277 NVIC_SetVectorTable(NVIC_VectTab_FLASH, (uint32_t)&_isr_vectorsflash_offs);
2
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278 #endif
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279
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280 /* Enable the USART1 Interrupt */
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281 NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
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282 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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283 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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284 NVIC_Init(&NVIC_InitStructure);
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c59513fd84fb Initial commit of STM32 test code.
Daniel O'Connor <darius@dons.net.au>
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285 }
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274e01fa5a4c - Do console IO with RX IRQs.
Daniel O'Connor <darius@dons.net.au>
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286