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/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-03-01 wangyq the first version
* 2019-11-01 wangyq update libraries
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "drv_uart.h"
#include <ald_gpio.h>
#include <ald_uart.h>
#ifdef RT_USING_SERIAL
/* es32 uart driver */
struct es32_uart
{
uart_handle_t huart;
IRQn_Type irq;
};
static rt_err_t es32f0x_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
gpio_init_t gpio_init_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_init_initstructure.mode = GPIO_MODE_OUTPUT;
gpio_init_initstructure.odos = GPIO_PUSH_PULL;
gpio_init_initstructure.pupd = GPIO_PUSH_UP;
gpio_init_initstructure.odrv = GPIO_OUT_DRIVE_NORMAL;
gpio_init_initstructure.flt = GPIO_FILTER_DISABLE;
gpio_init_initstructure.type = GPIO_TYPE_TTL;
#ifdef BSP_USING_UART0
gpio_init_initstructure.func = GPIO_FUNC_3;
ald_gpio_init(GPIOB, GPIO_PIN_10, &gpio_init_initstructure);
/* Initialize rx pin ,the same as txpin except mode */
gpio_init_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOB, GPIO_PIN_11, &gpio_init_initstructure);
#endif
#ifdef BSP_USING_UART1
/* Initialize tx pin */
gpio_init_initstructure.func = GPIO_FUNC_3;
ald_gpio_init(GPIOC, GPIO_PIN_10, &gpio_init_initstructure);
/* Initialize rx pin ,the same as txpin except mode*/
gpio_init_initstructure.mode = GPIO_MODE_INPUT;
ald_gpio_init(GPIOC, GPIO_PIN_11, &gpio_init_initstructure);
#endif
uart->huart.init.mode = UART_MODE_UART;
uart->huart.init.baud = cfg->baud_rate;
uart->huart.init.word_length = (uart_word_length_t)(cfg->data_bits - 5);
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);
}
/* enable rx int */
ald_uart_interrupt_config(&uart->huart, UART_IT_RXRD, ENABLE);
return RT_EOK;
}
static rt_err_t es32f0x_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_RXRD, 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_RXRD, ENABLE);
break;
}
return RT_EOK;
}
static int es32f0x_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 (!(uart->huart.perh->SR & 0x40)) ;
WRITE_REG(uart->huart.perh->TBR, c);
return 1;
}
static int es32f0x_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 (uart->huart.perh->SR & 0x01)
{
ch = (uint8_t)(uart->huart.perh->RBR & 0xFF);
}
return ch;
}
static const struct rt_uart_ops es32f0x_uart_ops =
{
es32f0x_configure,
es32f0x_control,
es32f0x_putc,
es32f0x_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 (UART0->RIF & 0x01)
{
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 (UART1->RIF & 0x01)
{
rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
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 = &es32f0x_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 = &es32f0x_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 */
return 0;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
#endif
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