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我基于中断的例程使用printf函数,但是重定向失败了,输出到了CIO的对话框中,没有定向到串口,而且__io_putchar函数没有被调用
代码如下,工程属性配置中是否应该进行修改
#include "ti_msp_dl_config.h" #include <stdio.h> uint8_t data = 0; volatile bool uart_send_complete_flag = false; int __io_putchar(int ch) { DL_UART_Main_transmitData(UART_0_INST, (uint8_t)ch); while(uart_send_complete_flag == false){} uart_send_complete_flag = false; return ch; } int main(void) { SYSCFG_DL_init(); NVIC_ClearPendingIRQ(UART_0_INST_INT_IRQN); NVIC_EnableIRQ(UART_0_INST_INT_IRQN); DL_SYSCTL_enableSleepOnExit(); while (1) { printf("Hello World!\n"); } } void UART_0_INST_IRQHandler(void) { switch (DL_UART_Main_getPendingInterrupt(UART_0_INST)) { case DL_UART_MAIN_IIDX_RX: data = DL_UART_Main_receiveData(UART_0_INST); DL_UART_Main_transmitData(UART_0_INST, data); break; case DL_UART_MAIN_IIDX_TX: uart_send_complete_flag = true; break; default: break; } }