diff options
Diffstat (limited to 'bsp/thead-smart/drivers/board_uart.c')
| -rw-r--r-- | bsp/thead-smart/drivers/board_uart.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/bsp/thead-smart/drivers/board_uart.c b/bsp/thead-smart/drivers/board_uart.c new file mode 100644 index 0000000000..d4f857f0bb --- /dev/null +++ b/bsp/thead-smart/drivers/board_uart.c @@ -0,0 +1,207 @@ +/* + * Copyright (c) 2006-2018, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2020-08-20 zx.chen first implementation + */ + +#include <rtthread.h> + +#ifdef RT_USING_CONSOLE + +#include <rthw.h> +#include <rtdevice.h> + +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <stdbool.h> + +#include "board.h" +#include "soc.h" +#include "ck_usart.h" +#include "drv_usart.h" +#include "pin_name.h" + + + +__attribute__((isr)) void ck_usart0_irqhandler(void); + +struct +{ + uint32_t base; + uint32_t irq; + void *handler; +} +const sg_usart_config[CONFIG_USART_NUM] = +{ + {CSKY_UART_BASE, UART_IRQn, ck_usart0_irqhandler}, +}; + + +int32_t target_usart_init(int32_t idx, uint32_t *base, uint32_t *irq, void **handler) +{ + if (idx >= CONFIG_USART_NUM) + { + return -1; + } + + if (base != NULL) + { + *base = sg_usart_config[idx].base; + } + + if (irq != NULL) + { + *irq = sg_usart_config[idx].irq; + } + + if (handler != NULL) + { + *handler = sg_usart_config[idx].handler; + } + + return idx; +} + + +#ifdef RT_USING_UART1 +#define UART_TXD1 PA10_TXD1_PWM1_XX_SIROUT1 +#define UART_RXD1 PA11_RXD1_PWM2_XX_SIRIN1 + +static usart_handle_t uart1_handle; +static struct rt_serial_device serial1; + +__attribute__((isr)) void ck_usart0_irqhandler(void) +{ + rt_hw_serial_isr(&serial1,RT_SERIAL_EVENT_RX_IND); +} +#endif + +/* + * UART interface + */ +static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg) +{ + int ret; + usart_handle_t uart; + + uint32_t bauds; + usart_mode_e mode; + usart_parity_e parity; + usart_stop_bits_e stopbits; + usart_data_bits_e databits; + + RT_ASSERT(serial != RT_NULL); + uart = (usart_handle_t)serial->parent.user_data; + RT_ASSERT(uart != RT_NULL); + + /* set baudrate parity...*/ + bauds = cfg->baud_rate; + mode = USART_MODE_ASYNCHRONOUS; + + if (cfg->parity == PARITY_EVEN) + parity = USART_PARITY_EVEN; + else if (cfg->parity == PARITY_ODD) + parity = USART_PARITY_ODD; + else + parity = USART_PARITY_NONE; + + stopbits = USART_STOP_BITS_1 ; + databits = USART_DATA_BITS_8; + + ret = csi_usart_config(uart, bauds, USART_MODE_ASYNCHRONOUS, parity, stopbits, databits); + + if (ret < 0) + { + return -RT_ERROR; + } + + return RT_EOK; +} + +static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg) +{ + usart_handle_t uart; + + RT_ASSERT(serial != RT_NULL); + uart = (usart_handle_t)serial->parent.user_data; + RT_ASSERT(uart != RT_NULL); + + switch (cmd) + { + case RT_DEVICE_CTRL_CLR_INT: + /* Disable the UART Interrupt */ + ck_usart_clr_int_flag(uart,IER_RDA_INT_ENABLE); + break; + + case RT_DEVICE_CTRL_SET_INT: + /* Enable the UART Interrupt */ + ck_usart_set_int_flag(uart,IER_RDA_INT_ENABLE); + break; + } + + return (RT_EOK); +} + +static int uart_putc(struct rt_serial_device *serial, char c) +{ + usart_handle_t uart; + + RT_ASSERT(serial != RT_NULL); + uart = (usart_handle_t)serial->parent.user_data; + RT_ASSERT(uart != RT_NULL); + csi_usart_putchar(uart,c); + + return (1); +} + +static int uart_getc(struct rt_serial_device *serial) +{ + int ch; + usart_handle_t uart; + + RT_ASSERT(serial != RT_NULL); + uart = (usart_handle_t)serial->parent.user_data; + RT_ASSERT(uart != RT_NULL); + + + ch = csi_uart_getchar(uart); + + return ch; +} + +const struct rt_uart_ops _uart_ops = +{ + uart_configure, + uart_control, + uart_putc, + uart_getc, +}; + + +int rt_hw_usart_init(void) +{ + struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; + +#ifdef RT_USING_UART1 + serial1.ops = & _uart_ops; + serial1.config = config; + serial1.config.bufsz = 2048; + serial1.config.baud_rate = 115200; + + uart1_handle = csi_usart_initialize(0, NULL); + + rt_hw_serial_register(&serial1, + "uart1", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, + uart1_handle); +#endif + + return 0; +} +INIT_BOARD_EXPORT(rt_hw_usart_init); +#endif |