/**
* Receive Handler for USART1
* Name: TM_USART1_ReceiveHandler
*
* Description: Gives functionality when a character is received over the USART serial communication channel
* Stores data received into a buffer for use in other functions
* Control available for use of the backspace key, functions called when enter key pressed (carriage return)
* Used to set the RTC time
*
* Arguments: uint8_t c - character received
*
* Returns: void
*/
void TM_USART1_ReceiveHandler(uint8_t c){
char str[256];
TM_USART_Putc(USART1, c);
buffer[i] = c;
i++;
/* Backspace */
if (c == 0x7F){
i--;
buffer[i] = 0;
i--;
buffer[i] = 0;
}
/* Carriage Return */
if (c == 13){
if (buffer[0] == 'R' && buffer[1] == 'T' && buffer[2] == 'C'){
if (isdigit(buffer[4]) && isdigit(buffer[5]) && !isdigit(buffer[6]) && isdigit(buffer[22])){
strncpy(RTC_time, (char *) buffer + 4, sizeof(buffer) - 4);
/* Set RTC time */
TM_RTC_SetDateTimeString(RTC_time);
}
}
sprintf(str, "\n\rRTC %s\n\r", RTC_time);
/* Put to USART */
TM_USART_Puts(USART1, str);
memset(buffer, 0, sizeof(buffer));
i = 0;
}
}
int main(void) {
/* Initialize system */
SystemInit();
/* Init USART6, TX: PC6 for debug */
TM_USART_Init(USART6, TM_USART_PinsPack_1, 115200);
/* Enable watchdog, 4 seconds before timeout */
if (TM_WATCHDOG_Init(TM_WATCHDOG_Timeout_4s)) {
/* Report to user */
printf("Reset occured because of Watchdog\n");
}
/* Initialize delay */
TM_DELAY_Init();
/* Initialize leds on board */
TM_DISCO_LedInit();
/* Initialize button */
TM_DISCO_ButtonInit();
/* Display to user */
printf("Program starting..\n");
/* Initialize RTC with internal clock if not already */
if (!TM_RTC_Init(TM_RTC_ClockSource_Internal)) {
/* Set default time for RTC */
/* Set date and time if RTC is not initialized already */
TM_RTC_SetDateTimeString("28.02.15.6;23:35:30");
};
/* Initialize ethernet peripheral */
/* All parameters NULL, default options for MAC, static IP, gateway and netmask will be used */
/* They are defined in tm_stm32f4_ethernet.h file */
if (TM_ETHERNET_Init(NULL, NULL, NULL, NULL) == TM_ETHERNET_Result_Ok) {
/* Successfully initialized */
TM_DISCO_LedOn(LED_GREEN);
} else {
/* Unsuccessfull communication */
TM_DISCO_LedOn(LED_RED);
}
/* Reset watchdog */
TM_WATCHDOG_Reset();
/* Initialize ethernet server if you want use it, server port 80 */
TM_ETHERNETSERVER_Enable(80);
/* Set SSI tags, we have 21 SSI tags */
TM_ETHERNETSERVER_SetSSITags(SSI_Tags, 21);
/* Set CGI tags, we have 1 CGI handler, for leds only */
TM_ETHERNETSERVER_SetCGIHandlers(CGI_Handlers, 1);
/* Read RTC clock */
TM_RTC_GetDateTime(&RTC_Data, TM_RTC_Format_BIN);
/* Print current time to USART */
printf("Current date: %02d:%02d:%02d\n", RTC_Data.hours, RTC_Data.minutes, RTC_Data.seconds);
/* Reset watchdog */
TM_WATCHDOG_Reset();
while (1) {
/* Update ethernet, call this as fast as possible */
TM_ETHERNET_Update();
/* If button pressed, toggle server status */
if (TM_DISCO_ButtonOnPressed()) {
/* If server is enabled */
if (TM_ETHERNETSERVER_Enabled()) {
/* Disable it */
TM_ETHERNETSERVER_Disable();
/* Print to user */
printf("Server disabled\n");
} else {
/* Enable it */
TM_ETHERNETSERVER_Enable(80);
/* Print to user */
printf("Server enabled\n");
}
}
/* Reset watchdog */
TM_WATCHDOG_Reset();
}
}
