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comparison 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
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2:274e01fa5a4c 3:74e9b3baac1e
1 #include <ctype.h> 1 #include <ctype.h>
2 #include <malloc.h>
2 #include <stdio.h> 3 #include <stdio.h>
3 #include <stdint.h> 4 #include <stdint.h>
5 #include <time.h>
6 #include <string.h>
7 #include <sys/time.h>
8 #include <stdlib.h>
9
4 #include "stm32f10x.h" 10 #include "stm32f10x.h"
11 #include "lcd.h"
5 #include "main.h" 12 #include "main.h"
6 #include "comm.h" 13 #include "comm.h"
7 14
8 typedef volatile struct { 15 typedef struct {
9 char buf[40]; 16 char buf[40];
10 uint8_t state; 17 volatile uint8_t state;
11 uint8_t len; 18 uint8_t len;
12 } consbuf_t; 19 } consbuf_t;
13 20
14 void Setup_HW(void); 21 void Setup_HW(void);
15 void NVIC_Configuration(void); 22 void NVIC_Configuration(void);
16 23
17 /* Called every millisecond */ 24
25 /* Called every 1 / TICK_FREQ */
26 #define TICK_FREQ 10000
18 RAMFUNC void 27 RAMFUNC void
19 SysTick_Handler(void) { 28 SysTick_Handler(void) {
20 static uint32_t tick = 0; 29 static uint32_t tick = 0;
21 30 static int led = 0;
31
22 tick++; 32 tick++;
33 if (tick % 10000 == 0) {
34 led = !led;
35 if (led)
36 GPIO_SetBits(GPIOB, GPIO_Pin_5);
37 else
38 GPIO_ResetBits(GPIOB, GPIO_Pin_5);
39 }
40
23 } 41 }
24 42
25 consbuf_t cmd; 43 consbuf_t cmd;
26 44
27 RAMFUNC void 45 RAMFUNC void
79 } 97 }
80 98
81 99
82 int 100 int
83 main(void) { 101 main(void) {
102 char buf[40];
103 struct tm nowtm;
104 time_t now;
105
84 cmd.state = cmd.len = 0; 106 cmd.state = cmd.len = 0;
85 107
86 /* Setup USART etc */ 108 /* Setup USART etc */
87 Setup_HW(); 109 Setup_HW();
88 110
89 /* NVIC configuration */ 111 /* NVIC configuration */
90 NVIC_Configuration(); 112 NVIC_Configuration();
91 113
92 /* Setup SysTick Timer for 1 millisecond interrupts, also enables Systick and Systick-Interrupt */ 114 /* Setup SysTick Timer rate, also enables Systick and Systick-Interrupt */
93 if (SysTick_Config(SystemCoreClock / 1000)) { 115 if (SysTick_Config(SystemCoreClock / TICK_FREQ)) {
94 /* Capture error */ 116 /* Capture error */
95 comm_puts("Can't setup SysTick\r\n"); 117 comm_puts("Can't setup SysTick\r\n");
96 while (1) 118 while (1)
97 ; 119 ;
98 } 120 }
99 121
122 /* Init LCD interface */
123 LCD_init();
124
125 /* Set stdout to unbuffered */
100 setvbuf(stdout, NULL, _IONBF, 0); 126 setvbuf(stdout, NULL, _IONBF, 0);
101 127
102 /* Say hello */ 128 /* Say hello */
103 fputs("\r\nHello world\r\n", stdout); 129 fputs("\r\nHello world\r\n", stdout);
104 130
131 #define Bank1_LCD_D ((uint32_t)0x60020000) //disp Data ADDR
132 #define Bank1_LCD_C ((uint32_t)0x60000000) //disp Reg ADDR
133
105 while (1) { 134 while (1) {
106 fputs("> ", stdout); 135 fputs("> ", stdout);
107 136
108 while (cmd.state != 255) 137 while (cmd.state != 255)
109 ; 138 ;
110 139
111 if (cmd.len > 0) 140 if (cmd.len > 0) {
112 printf("Got command '%s'\r\n", cmd.buf); 141 if (!strncmp("gc", cmd.buf, 2)) {
142 now = time(NULL);
143 gmtime_r(&now, &nowtm);
144 strftime(buf, sizeof(buf) - 1, "Time is %Y/%m/%d %H:%M:%S UTC", &nowtm);
145 printf("Time is %s (%d)\r\n", buf, (int)now);
146 } else if (!strncmp("sc ", cmd.buf, 3)) {
147 struct timeval tv;
148 tv.tv_sec = atoi(cmd.buf + 3);
149 tv.tv_usec = 0;
150 settimeofday(&tv, NULL);
151 } else if (!strncmp("lcd", cmd.buf, 3)) {
152 *(__IO uint16_t *) (Bank1_LCD_C) = 0x00;
153 printf("LCD ID = %hx\r\n", *(__IO uint16_t *) (Bank1_LCD_D));
154 } else if (!strncmp("read", cmd.buf, 4)) {
155 printf("PB5 = %d\r\n", GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_15));
156 } else if (!strncmp("zz", cmd.buf, 2)) {
157 NVIC_SystemReset();
158 } else {
159 printf("Unknown command\r\n");
160 }
161 }
113 cmd.state = 0; 162 cmd.state = 0;
114 } 163 }
115 } 164 }
116 165
117 /* Setup hardware (USART etc) */ 166 /* Setup hardware (USART etc) */
118 void 167 void
119 Setup_HW(void) { 168 Setup_HW(void) {
120 GPIO_InitTypeDef GPIO_InitStructure; 169 GPIO_InitTypeDef GPIO_InitStructure;
121 USART_InitTypeDef USART_InitStructure; 170 USART_InitTypeDef USART_InitStructure;
122 171
123 /* Enable USART1, GPIOA, GPIOD and AFIO clocks */ 172 /* RTC stuff */
124 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOD 173 /* Enable PWR and BKP clocks */
125 | RCC_APB2Periph_AFIO, ENABLE); 174 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
126 /* Enable USART2 clock */ 175
127 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); 176 /* Allow access to BKP Domain */
128 177 PWR_BackupAccessCmd(ENABLE);
129 /* DMA1 clock enable */ 178
130 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); 179 /* Reset Backup Domain
131 180 *
181 * This resets the RTC etc back to 0 so probably only useful under user command
182 BKP_DeInit();
183 */
184
185 /* Enable LSE */
186 RCC_LSEConfig(RCC_LSE_ON);
187
188 /* Wait till LSE is ready */
189 while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
190 ;
191
192 /* Select LSE as RTC Clock Source */
193 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
194
195 /* Enable RTC Clock */
196 RCC_RTCCLKCmd(ENABLE);
197
198 /* Wait for RTC registers synchronization */
199 RTC_WaitForSynchro();
200
201 /* Wait until last write operation on RTC registers has finished */
202 RTC_WaitForLastTask();
203
204 /* Wait until last write operation on RTC registers has finished */
205 RTC_WaitForLastTask();
206
207 /* Set RTC prescaler: set RTC period to 1sec */
208 RTC_SetPrescaler(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */
209
210 /* Wait until last write operation on RTC registers has finished */
211 RTC_WaitForLastTask();
212
213 /* Clock setup */
214 /* Enable clocks we need */
215 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
216 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
217 RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
218
219 /* Port configuration */
132 /* Configure USART1 TX (PA.09) as alternate function push-pull */ 220 /* Configure USART1 TX (PA.09) as alternate function push-pull */
133 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; 221 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
134 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 222 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
135 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; 223 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
136 GPIO_Init(GPIOA, &GPIO_InitStructure); 224 GPIO_Init(GPIOA, &GPIO_InitStructure);
138 /* Configure USART1 RX (PA.10) as input floating */ 226 /* Configure USART1 RX (PA.10) as input floating */
139 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; 227 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
140 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; 228 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
141 GPIO_Init(GPIOA, &GPIO_InitStructure); 229 GPIO_Init(GPIOA, &GPIO_InitStructure);
142 230
143 /* Init UART1 - 115200 8n1, no flow control TX & RX enabled */ 231 /* Configure PB5 as output push-pull */
232 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
233 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
234 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
235 GPIO_Init(GPIOB, &GPIO_InitStructure);
236
237 /* Configure PB15 as input pull-up push-pull */
238 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
239 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
240 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
241 GPIO_Init(GPIOB, &GPIO_InitStructure);
242
243 /* USART configuration */
244 /* USART1 - 115200 8n1, no flow control TX & RX enabled */
144 USART_InitStructure.USART_BaudRate = 115200; 245 USART_InitStructure.USART_BaudRate = 115200;
145 USART_InitStructure.USART_WordLength = USART_WordLength_8b; 246 USART_InitStructure.USART_WordLength = USART_WordLength_8b;
146 USART_InitStructure.USART_StopBits = USART_StopBits_1; 247 USART_InitStructure.USART_StopBits = USART_StopBits_1;
147 USART_InitStructure.USART_Parity = USART_Parity_No; 248 USART_InitStructure.USART_Parity = USART_Parity_No;
148 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; 249 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
149 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; 250 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
150
151 /* Configure USART1 */
152 USART_Init(USART1, &USART_InitStructure); 251 USART_Init(USART1, &USART_InitStructure);
153 252
154 /* Enable interrupts on receive data */ 253 /* Enable interrupts on receive data */
155 USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); 254 USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
156 255
157 /* Enable the USART1 */ 256 /* Enable USART */
158 USART_Cmd(USART1, ENABLE); 257 USART_Cmd(USART1, ENABLE);
159 } 258 }
160 259
161 /* Configure interrupt controller */ 260 /* Configure interrupt controller */
162 #ifdef VECT_TAB_RAM 261 #ifdef VECT_TAB_RAM