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rt-thread-official/bsp/essemi/es32f369x/drivers/drv_uart.c

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/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-01-14 wangyq the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "drv_uart.h"
#include <ald_gpio.h>
#include <ald_uart.h>
#include <ald_cmu.h>
#ifdef RT_USING_SERIAL
/* es32 uart driver */
struct es32_uart
{
uart_handle_t huart;
IRQn_Type irq;
};
static rt_err_t es32f3x_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
gpio_init_t gpio_initstructure;
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
/* Initialize tx pin */
gpio_initstructure.mode = GPIO_MODE_OUTPUT;
gpio_initstructure.odos = GPIO_PUSH_PULL;
gpio_initstructure.pupd = GPIO_PUSH_UP;
gpio_initstructure.podrv = GPIO_OUT_DRIVE_1;
gpio_initstructure.nodrv = GPIO_OUT_DRIVE_0_1;
gpio_initstructure.flt = GPIO_FILTER_DISABLE;
gpio_initstructure.type = GPIO_TYPE_TTL;
#ifdef BSP_USING_UART0
gpio_initstructure.func = GPIO_FUNC_3;
ald_gpio_init(GPIOB, GPIO_PIN_10, &gpio_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOB, GPIO_PIN_11, &gpio_initstructure);
ald_cmu_perh_clock_config(CMU_PERH_UART0, ENABLE);
#endif /* uart0 gpio init */
#ifdef BSP_USING_UART1
gpio_initstructure.func = GPIO_FUNC_3;
ald_gpio_init(GPIOC, GPIO_PIN_10, &gpio_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOC, GPIO_PIN_11, &gpio_initstructure);
ald_cmu_perh_clock_config(CMU_PERH_UART1, ENABLE);
#endif /* uart1 gpio init */
#ifdef BSP_USING_UART2
gpio_initstructure.func = GPIO_FUNC_5;
ald_gpio_init(GPIOC, GPIO_PIN_12, &gpio_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOD, GPIO_PIN_2, &gpio_initstructure);
ald_cmu_perh_clock_config(CMU_PERH_UART2, ENABLE);
#endif /* uart2 gpio init */
#ifdef BSP_USING_UART3
gpio_initstructure.func = GPIO_FUNC_4;
ald_gpio_init(GPIOC, GPIO_PIN_4, &gpio_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOC, GPIO_PIN_5, &gpio_initstructure);
ald_cmu_perh_clock_config(CMU_PERH_UART3, ENABLE);
#endif /* uart3 gpio init */
#ifdef BSP_USING_UART4
gpio_initstructure.func = GPIO_FUNC_3;
ald_gpio_init(GPIOB, GPIO_PIN_6, &gpio_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOB, GPIO_PIN_7, &gpio_initstructure);
ald_cmu_perh_clock_config(CMU_PERH_UART4, ENABLE);
#endif /* uart4 gpio init */
#ifdef BSP_USING_UART5
gpio_initstructure.func = GPIO_FUNC_4;
ald_gpio_init(GPIOB, GPIO_PIN_9, &gpio_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOB, GPIO_PIN_8, &gpio_initstructure);
ald_cmu_perh_clock_config(CMU_PERH_UART5, ENABLE);
#endif /* uart5 gpio init */
ald_uart_tx_fifo_config(&uart->huart, UART_TXFIFO_EMPTY, 1);
ald_uart_rx_fifo_config(&uart->huart, UART_RXFIFO_1BYTE, 1);
uart->huart.init.mode = UART_MODE_UART;
uart->huart.init.baud = cfg->baud_rate;
uart->huart.init.word_length = (uart_word_length_t)(8 - cfg->data_bits);
uart->huart.init.parity = (uart_parity_t)(cfg->parity == PARITY_EVEN ? UART_PARITY_EVEN : cfg->parity);
uart->huart.init.fctl = UART_HW_FLOW_CTL_DISABLE;
ald_uart_init(&uart->huart);
if (cfg->bit_order == BIT_ORDER_MSB)
{
UART_MSB_FIRST_ENABLE(&uart->huart);
}
else
{
UART_MSB_FIRST_DISABLE(&uart->huart);
}
if (cfg->invert == NRZ_INVERTED)
{
UART_DATA_INV_ENABLE(&uart->huart);
}
else
{
UART_DATA_INV_DISABLE(&uart->huart);
}
return RT_EOK;
}
static rt_err_t es32f3x_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->irq);
/* disable interrupt */
ald_uart_interrupt_config(&uart->huart, UART_IT_RFTH, DISABLE);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_EnableIRQ(uart->irq);
/* enable interrupt */
ald_uart_interrupt_config(&uart->huart, UART_IT_RFTH, ENABLE);
break;
}
return RT_EOK;
}
static int es32f3x_putc(struct rt_serial_device *serial, char c)
{
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
while (ald_uart_get_status(&uart->huart, UART_STATUS_TFEMPTY) == RESET)
;
WRITE_REG(uart->huart.perh->TXBUF, c);
return 1;
}
static int es32f3x_getc(struct rt_serial_device *serial)
{
int ch = -1;
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
if (ald_uart_get_status(&uart->huart, UART_STATUS_RFTH))
{
ch = (uint8_t)(uart->huart.perh->RXBUF & 0xFF);
}
return ch;
}
static const struct rt_uart_ops es32f3x_uart_ops =
{
es32f3x_configure,
es32f3x_control,
es32f3x_putc,
es32f3x_getc,
};
#ifdef BSP_USING_UART0
/* UART0 device driver structure */
struct es32_uart uart0 =
{
{UART0},
UART0_IRQn
};
struct rt_serial_device serial0;
void UART0_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
if ((ald_uart_get_mask_flag_status(&uart0.huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart0.huart, UART_IF_RFTH);
rt_hw_serial_isr(&serial0, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
/* UART1 device driver structure */
struct es32_uart uart1 =
{
{UART1},
UART1_IRQn
};
struct rt_serial_device serial1;
void UART1_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
if ((ald_uart_get_mask_flag_status(&uart1.huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart1.huart, UART_IF_RFTH);
rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
/* UART2 device driver structure */
struct es32_uart uart2 =
{
{UART2},
UART2_IRQn
};
struct rt_serial_device serial2;
void UART2_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
if ((ald_uart_get_mask_flag_status(&uart2.huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart2.huart, UART_IF_RFTH);
rt_hw_serial_isr(&serial2, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
/* UART3 device driver structure */
struct es32_uart uart3 =
{
{UART3},
UART3_IRQn
};
struct rt_serial_device serial3;
void UART3_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
if ((ald_uart_get_mask_flag_status(&uart3.huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart3.huart, UART_IF_RFTH);
rt_hw_serial_isr(&serial3, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART3 */
#ifdef BSP_USING_UART4
/* UART4 device driver structure */
struct es32_uart uart4 =
{
{UART4},
UART4_IRQn
};
struct rt_serial_device serial4;
void UART4_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
if ((ald_uart_get_mask_flag_status(&uart4.huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart4.huart, UART_IF_RFTH);
rt_hw_serial_isr(&serial4, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART4 */
#ifdef BSP_USING_UART5
/* UART5 device driver structure */
struct es32_uart uart5 =
{
{UART5},
UART5_IRQn
};
struct rt_serial_device serial5;
void UART5_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
if ((ald_uart_get_mask_flag_status(&uart5.huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart5.huart, UART_IF_RFTH);
rt_hw_serial_isr(&serial5, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART5 */
int rt_hw_uart_init(void)
{
struct es32_uart *uart;
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#ifdef BSP_USING_UART0
uart = &uart0;
serial0.ops = &es32f3x_uart_ops;
serial0.config = config;
/* register UART0 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;
serial1.ops = &es32f3x_uart_ops;
serial1.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 */
#ifdef BSP_USING_UART2
uart = &uart2;
serial2.ops = &es32f3x_uart_ops;
serial2.config = config;
/* register UART2 device */
rt_hw_serial_register(&serial2, "uart2",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
uart = &uart3;
serial3.ops = &es32f3x_uart_ops;
serial3.config = config;
/* register UART3 device */
rt_hw_serial_register(&serial3, "uart3",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART3 */
#ifdef BSP_USING_UART4
uart = &uart4;
serial4.ops = &es32f3x_uart_ops;
serial4.config = config;
/* register UART4 device */
rt_hw_serial_register(&serial4, "uart4",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART4 */
#ifdef BSP_USING_UART5
uart = &uart5;
serial5.ops = &es32f3x_uart_ops;
serial5.config = config;
/* register UART5 device */
rt_hw_serial_register(&serial5, "uart5",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART5 */
return 0;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
#endif
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