106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
#include "shell_uart.h"
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//发送一个字符
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void dev_uart_out_char(char c)
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{
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uart_putchar(TERM_UART_INDEX, c);
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}
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//读取一个字符
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char dev_uart_in_char()
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{
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uart_device_info *dev = (uart_device_info *)g_term_uart_handle;
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//osSemaphoreWait(dev->sem_recv_one_byte_data,0);
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osDelay(300);
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return uart_dev_in_char(g_term_uart_handle);
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}
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#if 0
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//shell命令行使用
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__weak size_t __write(int handle, const unsigned char * buffer, size_t size)
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{
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size_t nChars = 0;
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if (buffer == 0)
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{
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/* This means that we should flush internal buffers. Since we*/
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/* don't we just return. (Remember, "handle" == -1 means that all*/
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/* handles should be flushed.)*/
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return 0;
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}
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/* This function only writes to "standard out" and "standard err",*/
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/* for all other file handles it returns failure.*/
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if ((handle != _LLIO_STDOUT) && (handle != _LLIO_STDERR))
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{
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return _LLIO_ERROR;
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}
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/* Send data.*/
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while (size--)
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{
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dev_uart_out_char(*buffer++);
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++nChars;
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}
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return nChars;
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}
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__weak size_t __read(int handle, unsigned char * buffer, size_t size)
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{
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size_t nChars = 0;
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uint16_t ch = 0;
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if (buffer == 0)
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{
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/* This means that we should flush internal buffers. Since we*/
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/* don't we just return. (Remember, "handle" == -1 means that all*/
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/* handles should be flushed.)*/
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return 0;
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}
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/* This function only writes to "standard out" and "standard err",*/
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/* for all other file handles it returns failure.*/
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if ((handle != _LLIO_STDIN) && (handle != _LLIO_STDERR))
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{
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return _LLIO_ERROR;
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}
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/* read data.*/
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while (size--)
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{
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ch=dev_uart_in_char();
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*buffer++ = (char)ch & 0xFF;
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++nChars;
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}
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return nChars;
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}
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/**
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* \brief UART putchar function
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* \attention 内部函数，用户无法调用
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* \param[in] instance UART模块号
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* \param[in] str 指向字符串常量的指针
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* \retval None
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*/
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static void UART_putstr(UART_MemMapPtr instance, const char *str)
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{
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while(*str != '\0')
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{
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uart_putchar(UART1_BASE_PTR, *str++);
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}
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}
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/**
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* \brief 进制转换
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* \attention 内部函数，用户无法调用
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* \retval None
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*/
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static void printn(unsigned int n, unsigned int b)
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{
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static char *ntab = "0123456789ABCDEF";
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unsigned int a, m;
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if (n / b)
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{
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a = n / b;
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printn(a, b);
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}
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m = n % b;
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uart_putchar(UART1_BASE_PTR, ntab[m]);
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}
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#endif
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