stm8官方库下面，有一个UART1_Printf 例程，修改其main.c,添加printf()打印输出一个数组元素语句，发现输出结果有问题。同样的程序，使用IAR编译，结果符合预期。
main.c
==================================
/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"
#include "stdio.h"
/**
* @addtogroup UART1_Printf
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#ifdef _RAISONANCE_
#define PUTCHAR_PROTOTYPE int putchar (char c)
#define GETCHAR_PROTOTYPE int getchar (void)
#elif defined (_COSMIC_)
#define PUTCHAR_PROTOTYPE char putchar (char c)
#define GETCHAR_PROTOTYPE char getchar (void)
#else /* _IAR_ */
#define PUTCHAR_PROTOTYPE int putchar (int c)
#define GETCHAR_PROTOTYPE int getchar (void)
#endif /* _RAISONANCE_ */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
unsigned char ChipUniqueID[12]={1,2,3,4,5,6,7,8,9,10,11,12};
void main(void)
{
unsigned char i=0;
char ans;
/*High speed internal clock prescaler: 1*/
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
UART1_DeInit();
/* UART1 configuration ------------------------------------------------------*/
/* UART1 configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Receive and transmit enabled
- UART1 Clock disabled
*/
UART1_Init((uint32_t)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO,
UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE);
/* Output a message on Hyperterminal using printf function */
printf("\n\rUART1 Example :retarget the C library printf()/getchar() functions to the UART\n\r");
printf("\n\rEnter Text\n\r");
printf("\n\r\n\r");
for(i=0;i<12;i++)
{
printf(" 0x%x ",ChipUniqueID);
}
while (1)
{
ans = getchar();
printf("%c", ans);
}
}
/**
* @brief Retargets the C library printf function to the UART.
* @param c Character to send
* @retval char Character sent
*/
PUTCHAR_PROTOTYPE
{
/* Write a character to the UART1 */
UART1_SendData8(c);
/* Loop until the end of transmission */
while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET);
return (c);
}
/**
* @brief Retargets the C library scanf function to the USART.
* @param None
* @retval char Character to Read
*/
GETCHAR_PROTOTYPE
{
#ifdef _COSMIC_
char c = 0;
#else
int c = 0;
#endif
/* Loop until the Read data register flag is SET */
while (UART1_GetFlagStatus(UART1_FLAG_RXNE) == RESET);
c = UART1_ReceiveData8();
return (c);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
======================================================
COSMIC的输出结果
IAR的输出结果
======================================================
请教这是什么问题？
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