【瑞萨RA4系列开发板体验】printf+hello world

RA助手 · 发表于 2023-2-1 11:50:38

【瑞萨RA4系列开发板体验】printf+hello world
作者：lugl

今天看了看Jlink v10，最便宜的也得400块，太贵了，但是要调试程序，只有选择printf来实现了，所以先把printf来实现。
1、按照常规的新建好工程：

2、打开资料《RA2E1/RA2L1入门指南》的《# 瑞萨e2studio----打印函数(printf、sprintf)的实现》这篇文章，他们的芯片型号不一样，但是操作也是基本相同的。
3、按照以后步步骤添加uart0:

4、选好IO为P101、P100为RX、TX

5、设置E2STUDIO堆栈

6、修改e2studio的重定向printf设置C++ 构建->设置->GNU ARM Cross C Linker->Miscellaneous去掉Other linker flags中的 “--specs=rdimon.specs”

7、完整的halt_entry.c内容如下：

#include "hal_data.h"
#include <stdio.h>
FSP_CPP_HEADER
void R_BSP_WarmStart(bsp_warm_start_event_t event);
FSP_CPP_FOOTER
fsp_err_t err = FSP_SUCCESS;unsigned char send_buff[100];
volatile bool uart_send_complete_flag = false;
void user_uart_callback (uart_callback_args_t * p_args)
{
if(p_args->event == UART_EVENT_TX_COMPLETE)
{
uart_send_complete_flag = true;
}
}
#ifdef __GNUC__ //串口重定向
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif
PUTCHAR_PROTOTYPE
{
err = R_SCI_UART_Write(&g_uart0_ctrl, (uint8_t *)&ch, 1);
if(FSP_SUCCESS != err) __BKPT();
while(uart_send_complete_flag == false){}
uart_send_complete_flag = false;
return ch;
}
int _write(int fd,char *pBuffer,int size)
{
for(int i=0;i<size;i++)
{
__io_putchar(*pBuffer++);
}
return size;
}
/*******************************************************************************************************************//**
* main() is generated by the RA Configuration editor and is used to generate threads if an RTOS is used. This function
* is called by main() when no RTOS is used.
**********************************************************************************************************************/
void hal_entry(void)
{
/* TODO: add your own code here */
err = R_SCI_UART_Open(&g_uart0_ctrl, &g_uart0_cfg);
assert(FSP_SUCCESS == err);
unsigned char buff[]="RA E2STUDIO";
uint8_t buff_len = strlen(buff);
err = R_SCI_UART_Write(&g_uart0_ctrl, buff, buff_len);
if(FSP_SUCCESS != err) __BKPT();
while(uart_send_complete_flag == false){}
uart_send_complete_flag = false;
sprintf(send_buff, "\nHello World!.\n");
uint8_t len = strlen(send_buff);
err = R_SCI_UART_Write(&g_uart0_ctrl, send_buff, len);
if(FSP_SUCCESS != err) __BKPT();
while(uart_send_complete_flag == false){}
uart_send_complete_flag = false;
memset(send_buff, '\0', sizeof(100));
int int_i=55;
float float_i=66.20f;
char char_i[]="hello e2studio";
while(1)
{
printf("int_i=%d\n",int_i);
printf("float_i=%.2f\n",float_i);
printf("char_i='%s'\n",char_i);
R_BSP_SoftwareDelay(1000, BSP_DELAY_UNITS_MILLISECONDS);
// NOLINT100->160
}
#if BSP_TZ_SECURE_BUILD
/* Enter non-secure code */
R_BSP_NonSecureEnter();
#endif
}
/*******************************************************************************************************************//**
* This function is called at various points during the startup process. This implementation uses the event that is
* called right before main() to set up the pins.
*
* @param[in] event Where at in the start up process the code is currently at
**********************************************************************************************************************/
void R_BSP_WarmStart(bsp_warm_start_event_t event)
{
if (BSP_WARM_START_RESET == event)
{
#if BSP_FEATURE_FLASH_LP_VERSION != 0
/* Enable reading from data flash. */
R_FACI_LP->DFLCTL = 1U;
/* Would normally have to wait tDSTOP(6us) for data flash recovery. Placing the enable here, before clock and
* C runtime initialization, should negate the need for a delay since the initialization will typically take more than 6us. */
#endif
}
if (BSP_WARM_START_POST_C == event)
{
/* C runtime environment and system clocks are setup. */
/* Configure pins. */
R_IOPORT_Open (&g_ioport_ctrl, g_ioport.p_cfg);
}
}
#if BSP_TZ_SECURE_BUILD
BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ();
/* Trustzone Secure Projects require at least one nonsecure callable function in order to build (Remove this if it is not required to build). */
BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ()
{
}
#endif