134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-08-04 tangzz98 first version
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*
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*/
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#include "drv_uart.h"
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#ifdef RT_USING_SERIAL_V1
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#ifdef CONFIG_UART_ISR_IN_IRAM
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#define UART_ISR_ATTR IRAM_ATTR
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#else
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#define UART_ISR_ATTR
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#endif
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uart_hal_context_t hal[] = {
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{
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.dev = &UART0,
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},
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{
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.dev = &UART1,
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},
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};
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static struct rt_serial_device _serial;
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static void mcu_uart_rx_intr_handler(void *param)
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{
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uint32_t uart_intr_status;
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struct rt_serial_device *serial;
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uart_port_t port;
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rt_interrupt_enter();
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serial = (struct rt_serial_device *)param;
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port = (uart_port_t)serial->parent.user_data;
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uart_intr_status = uart_hal_get_intsts_mask(&hal[port]);
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if (uart_intr_status != 0)
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{
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if (uart_intr_status & UART_INTR_RXFIFO_FULL)
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{
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
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}
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uart_hal_clr_intsts_mask(&hal[port], uart_intr_status);
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}
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rt_interrupt_leave();
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}
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static rt_err_t mcu_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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return RT_EOK;
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}
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static rt_err_t mcu_uart_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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return RT_EOK;
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}
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static int mcu_uart_putc(struct rt_serial_device *serial, char c)
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{
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uart_port_t port = (uart_port_t)serial->parent.user_data;
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uint32_t write_size = 0;
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do
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{
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uart_hal_write_txfifo(&hal[port], (const uint8_t *)&c, 1, &write_size);
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} while (write_size == 0);
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return 1;
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}
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static int mcu_uart_getc(struct rt_serial_device *serial)
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{
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uart_port_t port = (uart_port_t)serial->parent.user_data;
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uint8_t c;
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int len = uart_hal_get_rxfifo_len(&hal[port]);
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if (len == 0)
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{
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return -1;
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}
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else
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{
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len = 1;
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uart_hal_read_rxfifo(&hal[port], &c, &len);
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return (int)c;
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}
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}
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static const struct rt_uart_ops _uart_ops =
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{
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mcu_uart_configure,
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mcu_uart_control,
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mcu_uart_putc,
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mcu_uart_getc,
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RT_NULL,
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};
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int rt_hw_uart_init(void)
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{
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uart_intr_config_t uart_intr = {
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.intr_enable_mask = UART_INTR_RXFIFO_FULL,
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.rxfifo_full_thresh = 1,
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};
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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uart_config_t uart_config = {
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.baud_rate = BAUD_RATE_115200,
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.data_bits = UART_DATA_8_BITS,
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.parity = UART_PARITY_DISABLE,
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.stop_bits = UART_STOP_BITS_1,
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.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
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.source_clk = UART_SCLK_APB,
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};
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int intr_alloc_flags = 0;
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#if CONFIG_UART_ISR_IN_IRAM
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intr_alloc_flags = ESP_INTR_FLAG_IRAM;
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#endif
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ESP_ERROR_CHECK(uart_param_config(RT_BSP_UART_PORT, &uart_config));
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ESP_ERROR_CHECK(uart_set_pin(RT_BSP_UART_PORT, RT_BSP_UART_TX_PIN, RT_BSP_UART_RX_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
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ESP_ERROR_CHECK(esp_intr_alloc(uart_periph_signal[RT_BSP_UART_PORT].irq, intr_alloc_flags, mcu_uart_rx_intr_handler, (void *)&_serial, NULL));
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ESP_ERROR_CHECK(uart_intr_config(RT_BSP_UART_PORT, &uart_intr));
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_serial.ops = &_uart_ops;
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_serial.config = config;
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return rt_hw_serial_register(&_serial, "uart", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, (void *)RT_BSP_UART_PORT);
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}
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INIT_BOARD_EXPORT(rt_hw_uart_init);
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#endif /* RT_USING_SERIAL_V1 */
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