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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-09-05 qinweizhong first version
*/
#include <rtdevice.h>
#include "drv_uart.h"
#include "tae32f53xx_ll.h"
#include <tae32f53xx_ll_cortex.h>
#include "drv_uart.h"
/* uart driver */
struct tae32_uart
{
UART_TypeDef *uart;
IRQn_Type irq;
};
static void uart_init(void)
{
UART_InitTypeDef uart_init;
uart_init.baudrate = 115200;
uart_init.dat_len = UART_DAT_LEN_8b;
uart_init.stop_len = UART_STOP_LEN_1b;
uart_init.parity = UART_PARITY_NO;
uart_init.tx_tl = UART_TX_EMPTY_TRI_LVL_EMPTY;
uart_init.rx_tl = UART_RX_AVL_TRI_LVL_1CHAR;
LL_UART_Init(UART0, &uart_init);
__LL_UART_RxDatAvl_INT_En(UART0);
}
static rt_err_t _uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct tae32_uart *uart;
UART_InitTypeDef UART_InitStructure;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = (struct tae32_uart *)serial->parent.user_data;
UART_InitStructure.baudrate = cfg->baud_rate;
if (cfg->data_bits == DATA_BITS_8)
UART_InitStructure.dat_len = UART_DAT_LEN_8b;
if (cfg->stop_bits == STOP_BITS_1)
UART_InitStructure.stop_len = UART_STOP_LEN_1b;
else if (cfg->stop_bits == STOP_BITS_2)
UART_InitStructure.stop_len = UART_STOP_LEN_2b;
UART_InitStructure.parity = UART_PARITY_NO;
UART_InitStructure.tx_tl = UART_TX_EMPTY_TRI_LVL_EMPTY;
UART_InitStructure.rx_tl = UART_RX_AVL_TRI_LVL_1CHAR;
LL_UART_Init(uart->uart, &UART_InitStructure);
return RT_EOK;
}
static rt_err_t _uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct tae32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct tae32_uart *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->irq);
__LL_UART_RxDatAvl_INT_Dis(uart->uart);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_EnableIRQ(uart->irq);
/* enable interrupt */
__LL_UART_RxDatAvl_INT_En(uart->uart);
break;
}
return RT_EOK;
}
static int _uart_putc(struct rt_serial_device *serial, char c)
{
struct tae32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct tae32_uart *)serial->parent.user_data;
while (!__LL_UART_IsTxFIFONotFull(uart->uart)) {};
__LL_UART_TxBuf9bits_Write(uart->uart, (uint16_t)c);
return 1;
}
static int _uart_getc(struct rt_serial_device *serial)
{
int ch;
struct tae32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct tae32_uart *)serial->parent.user_data;
ch = -1;
if (__LL_UART_IsDatReady(uart->uart))
{
ch = __LL_UART_RxBuf9bits_Read(uart->uart);
}
else
{
rt_thread_mdelay(10);
}
return ch;
}
static const struct rt_uart_ops _uart_ops =
{
_uart_configure,
_uart_control,
_uart_putc,
_uart_getc,
};
#if defined(BSP_USING_UART0)
/* UART0 device driver structure */
static struct tae32_uart uart0;
struct rt_serial_device serial0;
void UART0_IRQHandler(void)
{
struct tae32_uart *uart;
uart = &uart0;
/* enter interrupt */
rt_interrupt_enter();
if (__LL_UART_INT_ID_Get(uart->uart) == UART_INT_ID_RX_AVL)
{
rt_hw_serial_isr(&serial0, RT_SERIAL_EVENT_RX_IND);
}
if (__LL_UART_INT_ID_Get(uart->uart) != UART_INT_ID_RX_AVL)
{
/* clear interrupt */
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART1)
/* UART2 device driver structure */
static struct tae32_uart uart1;
struct rt_serial_device serial1;
void UART1_IRQHandler(void)
{
struct tae32_uart *uart;
uart = &uart1;
/* enter interrupt */
rt_interrupt_enter();
if (__LL_UART_INT_ID_Get(uart->uart) == UART_INT_ID_RX_AVL)
{
rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
}
if (__LL_UART_INT_ID_Get(uart->uart) != UART_INT_ID_RX_AVL)
{
/* clear interrupt */
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
int rt_hw_uart_init(void)
{
struct tae32_uart *uart;
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#ifdef BSP_USING_UART0
uart = &uart0;
uart->uart = UART0;
uart->irq = UART0_IRQn;
config.baud_rate = BAUD_RATE_115200;
serial0.ops = &_uart_ops;
serial0.config = config;
uart_init();
/* register UART1 device */
rt_hw_serial_register(&serial0, "uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
uart = &uart1;
uart->uart = UART1;
uart->irq = UART1_IRQn;
config.baud_rate = BAUD_RATE_115200;
serial2.ops = &_uart_ops;
serial2.config = config;
/* register UART1 device */
rt_hw_serial_register(&serial1, "uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART1 */
return 0;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
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