#include "board_uart.h"

// ³õʼ»¯UART
void uart_init() {
    UART1_DeInit();
    UART1_Init((uint32_t)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO,
              UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE);
}

// ͨ¹ýUART·¢Ë͵¥¸ö×Ö·û
void uart_send_char(char c) {
    while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET);
    UART1_SendData8(c);
}

// ͨ¹ýUART·¢ËÍ×Ö·û´®
void uart_send_string(const char *str) {
    while (*str) {
        uart_send_char(*str++);
    }
}

// ͨ¹ýUART·¢ËÍÊ®Áù½øÖÆÊý£¬´ø0xǰ׺ºÍ»»ÐÐ
void uart_send_hex(uint32_t num) {
    const char *hex_digits = "0123456789ABCDEF";
    int leading_zero = 1; // ÓÃÓÚÌø¹ýÇ°µ¼ÁãµÄ±êÖ¾
		int i;
    uart_send_string("0x"); // ·¢ËÍ0xǰ׺

    for (i = 28; i >= 0; i -= 4) {
        char digit = hex_digits[(num >> i) & 0xF];

        if (digit != '0' || !leading_zero || i == 0) {
            leading_zero = 0; // Óöµ½µÚÒ»¸ö·ÇÁã×Ö·ûºó£¬Í£Ö¹Ìø¹ýÇ°µ¼Áã
            uart_send_char(digit);
        }
    }
		uart_send_char('\r');
		uart_send_char('\n');
}