STM8S103: UART Receive String Problem With Delay() in while(1)

[Jaydip Patel]

 
 
#include "stm8s.h"
#include "stdio.h"
 
 
 
#define Relay_1_Port (GPIOB)
#define Relay_1_Pin (GPIO_PIN_5)
#define Relay_1 '1'
 
#define LED_1_OFF_Port (GPIOC)
#define LED_1_OFF_Pin (GPIO_PIN_7)
 
 
#define Read_fun '0'
#define Write_fun '1'
 
#define HIGH '1'
#define LOW '0'
 
 
#define DEBUG_SERIAL_ECHO_BACK // fOR DEBUGGING
#define DEBUG_RECEIVED_FUNCTION_FROM_SERIAL
 
 
static void CLK_Config(void);
static void UART1_Config(void);
void Delay(uint32_t nCount);
char Serial_read_char(void);
void Serial_print_char (char value);
bool Serial_available();
void Serial_print_string (char string[]);
 
 
 
static char *cmd = "AURA-TC:" ;
static uint8_t cmd_cmpr = 0;
void main(void)
{
 
 CLK_Config();
 
 GPIO_Init(Relay_1_Port, (GPIO_Pin_TypeDef)Relay_1_Pin, GPIO_MODE_OUT_PP_LOW_FAST);
 
 GPIO_Init(LED_1_OFF_Port, (GPIO_Pin_TypeDef)LED_1_OFF_Pin, GPIO_MODE_OUT_PP_LOW_FAST);
 
 
 
 UART1_Config();
 Delay(100000);
 while (1)
 {
 
 if (Serial_available() > 0)
 {
 cmd_cmpr = 0; // RESET
 char data[20] = {0};
 for (int i = 0; i < 8; i++)
 {
 data[i] = Serial_read_char();
 
#ifdef DEBUG_SERIAL_ECHO_BACK
 Serial_print_char(data[i]);
#endif
 
 if (data[i] == *(cmd + i))
 {
 cmd_cmpr = 1;
 }
 else
 {
 cmd_cmpr = 0;
 break;
 }
 
 }
 
 char Read_write_fun = Serial_read_char();
 char Relay_num = Serial_read_char();
 char Write_High_Low = Serial_read_char();
 
#ifdef DEBUG_RECEIVED_FUNCTION_FROM_SERIAL
 Serial_print_string("\n----- Received Command code --------\n");
 Serial_print_char(Read_write_fun);
 Serial_print_char(Relay_num);
 Serial_print_char(Write_High_Low);
#endif
 
 
 
 if (cmd_cmpr)
 {
 
 
 if (Read_write_fun == Write_fun)
 {
 if (Relay_num == Relay_1)
 {
 if (Write_High_Low == HIGH)
 {
 GPIO_WriteLow(LED_1_OFF_Port, (GPIO_Pin_TypeDef)LED_1_OFF_Pin);
 GPIO_WriteHigh(Relay_1_Port, (GPIO_Pin_TypeDef)Relay_1_Pin);
 }
 
 if (Write_High_Low == LOW)
 {
 GPIO_WriteLow(Relay_1_Port, (GPIO_Pin_TypeDef)Relay_1_Pin);
 GPIO_WriteHigh(LED_1_OFF_Port, (GPIO_Pin_TypeDef)LED_1_OFF_Pin);
 }
 
 }
 
 }
 
 
 }
 
 
 
 
 
 }
 
 // ================= This is Problem ====================
 // Delay(10000); if putting this the serial receiving not working properly
 
 }
}
 
 
 
 
void Serial_print_string (char string[])
{
 while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET); //wait for sending
 char i = 0;
 
 while (string[i] != 0x00)
 {
 UART1_SendData8(string[i]);
 while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET);
 i++;
 }
}
 
 
 
 
char Serial_read_char(void)
{
 
 int read_count_var = 0;
 while (UART1_GetFlagStatus(UART1_FLAG_RXNE) == 0)
 {
 read_count_var++;
 Delay(1);
 if (read_count_var >= 100) {
 break;
 }
 
 
 }
 while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET);
 UART1_ClearFlag(UART1_FLAG_RXNE);
 
 return (UART1_ReceiveData8());
 
}
 
void Serial_print_char (char value)
{
 UART1_SendData8(value);
 while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET); //wait for sending
}
 
 
bool Serial_available()
{
 if (UART1_GetFlagStatus(UART1_FLAG_RXNE) == 1)
 return TRUE;
 else
 return FALSE;
}
 
 
 
static void CLK_Config(void)
{
 
 CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
}
 
 
 
 
static void UART1_Config(void)
{
 
 UART1_Init((uint32_t)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO,
 UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE);
 
 
 
 
 
 
 
 
 UART1_Cmd(ENABLE);
 
 
}
 
 
void Delay(uint32_t nCount)
{
 
 while (nCount != 0)
 {
 nCount--;
 }
}
 
#ifdef USE_FULL_ASSERT
 
 
void assert_failed(uint8_t* file, uint32_t line)
{
 
 while (1)
 {
 }
}
#endif