#include "b_config.h"
#include "hal/inc/b_hal_uart.h"

//      Register Address
#define UART1_BASE_ADDR (0x40013800)
#define UART2_BASE_ADDR (0x40004400)
#define UART3_BASE_ADDR (0x40004800)

#define LPUART1_BASE_ADDR (0x44002400)

// ref stm32h503xx.h
typedef struct
{
    volatile uint32_t CR1;   /*!< USART Control register 1,                 Address offset: 0x00  */
    volatile uint32_t CR2;   /*!< USART Control register 2,                 Address offset: 0x04  */
    volatile uint32_t CR3;   /*!< USART Control register 3,                 Address offset: 0x08  */
    volatile uint32_t BRR;   /*!< USART Baud rate register,                 Address offset: 0x0C  */
    volatile uint32_t GTPR;  /*!< USART Guard time and prescaler register,  Address offset: 0x10  */
    volatile uint32_t RTOR;  /*!< USART Receiver Time Out register,         Address offset: 0x14  */
    volatile uint32_t RQR;   /*!< USART Request register,                   Address offset: 0x18  */
    volatile uint32_t ISR;   /*!< USART Interrupt and status register,      Address offset: 0x1C  */
    volatile uint32_t ICR;   /*!< USART Interrupt flag Clear register,      Address offset: 0x20  */
    volatile uint32_t RDR;   /*!< USART Receive Data register,              Address offset: 0x24  */
    volatile uint32_t TDR;   /*!< USART Transmit Data register,             Address offset: 0x28  */
    volatile uint32_t PRESC; /*!< USART Prescaler register,                 Address offset: 0x2C  */
} McuUartReg_t;

#define MCU_UART1 ((McuUartReg_t *)UART1_BASE_ADDR)
#define MCU_UART2 ((McuUartReg_t *)UART2_BASE_ADDR)
#define MCU_UART3 ((McuUartReg_t *)UART3_BASE_ADDR)

#define MCU_LPUART1 ((McuUartReg_t *)LPUART1_BASE_ADDR)

static McuUartReg_t *UartTable[9] = {MCU_UART1, MCU_UART2, MCU_UART3, NULL,       NULL,
                                     NULL,      NULL,      NULL,      MCU_LPUART1};

int bMcuUartSend(bHalUartNumber_t uart, const uint8_t *pbuf, uint16_t len)
{
    int           i       = 0;
    int           timeout = 0x000B0000;
    McuUartReg_t *pUart   = NULL;
    if (uart > B_HAL_UART_NUMBER || pbuf == NULL)
    {
        return -1;
    }
    pUart = UartTable[uart];
    if (pUart == NULL)
    {
        return -1;
    }
    for (i = 0; i < len; i++)
    {
        timeout = 0x000B0000;
        while (timeout > 0 && ((pUart->ISR & (0x1 << 6)) == 0))
        {
            timeout--;
        }
        if (timeout <= 0)
        {
            return -2;
        }
        pUart->TDR = pbuf[i];
    }
    timeout = 0x000B0000;
    while (timeout > 0 && ((pUart->ISR & (0x1 << 6)) == 0))
    {
        timeout--;
    }
    if (timeout <= 0)
    {
        return -2;
    }
    return len;
}