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-rw-r--r--bsp/raspberry-pico/drivers/drv_uart.c291
-rw-r--r--bsp/raspberry-pico/drivers/drv_uart.h3
2 files changed, 122 insertions, 172 deletions
diff --git a/bsp/raspberry-pico/drivers/drv_uart.c b/bsp/raspberry-pico/drivers/drv_uart.c
index 6077b60f92..64f572b883 100644
--- a/bsp/raspberry-pico/drivers/drv_uart.c
+++ b/bsp/raspberry-pico/drivers/drv_uart.c
@@ -5,6 +5,7 @@
*
* Change Logs:
* Date Author Notes
+ * 2023-09-26 1ridic Integrate with RT-Thread driver framework.
*/
#include <rthw.h>
@@ -13,183 +14,127 @@
#include "board.h"
#include "drv_uart.h"
+#ifdef RT_USING_SERIAL
+
#include "hardware/uart.h"
#include "hardware/irq.h"
-#define UART_ID uart0
-#define BAUD_RATE 115200
-#define DATA_BITS 8
-#define STOP_BITS 1
-#define PARITY UART_PARITY_NONE
-
-// We are using pins 0 and 1, but see the GPIO function select table in the
-// datasheet for information on which other pins can be used.
-#define UART_TX_PIN 0
-#define UART_RX_PIN 1
+#if !defined(BSP_USING_UART0) && !defined(BSP_USING_UART1)
+ #error "Please define at least one BSP_USING_UARTx"
+ /* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
+#endif
-#define PICO_UART_DEVICE(uart) (struct pico_uart_dev *)(uart)
-
-static struct pico_uart_dev uart0_dev;
+#ifdef BSP_USING_UART0
+ void pico_uart0_isr(void);
+#endif
+#ifdef BSP_USING_UART1
+ void pico_uart1_isr(void);
+#endif
struct pico_uart_dev
{
- struct rt_serial_device parent;
- rt_uint32_t uart_periph;
+ rt_serial_t parent;
+ uart_inst_t *instance;
rt_uint32_t irqno;
+ rt_uint32_t tx_pin;
+ rt_uint32_t rx_pin;
+ void (*uart_isr)(void);
};
-void pico_uart_isr(void)
+static struct pico_uart_dev uart_dev[] =
{
- rt_interrupt_enter();
- /* read interrupt status and clear it */
- if (uart_is_readable(uart0)) /* rx ind */
+#ifdef BSP_USING_UART0
{
- rt_hw_serial_isr(&uart0_dev.parent, RT_SERIAL_EVENT_RX_IND);
- }
-
- rt_interrupt_leave();
-}
+ .instance = uart0,
+ .irqno = UART0_IRQ,
+ .tx_pin = BSP_UART0_TX_PIN,
+ .rx_pin = BSP_UART0_RX_PIN,
+ .uart_isr = pico_uart0_isr,
+ },
+#endif
+#ifdef BSP_USING_UART1
+ {
+ .instance = uart1,
+ .irqno = UART1_IRQ,
+ .tx_pin = BSP_UART1_TX_PIN,
+ .rx_pin = BSP_UART1_RX_PIN,
+ .uart_isr = pico_uart1_isr,
+ },
+#endif
+};
-/*
- * UART interface
- */
-static rt_err_t pico_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
+enum
{
- return RT_EOK;
-}
+#ifdef BSP_USING_UART0
+ UART0_INDEX,
+#endif
+#ifdef BSP_USING_UART1
+ UART1_INDEX,
+#endif
+};
-static rt_err_t pico_uart_control(struct rt_serial_device *serial, int cmd, void *arg)
+#ifdef BSP_USING_UART0
+void pico_uart0_isr(void)
{
- // Select correct interrupt for the UART we are using
- int UART_IRQ = UART_ID == uart0 ? UART0_IRQ : UART1_IRQ;
-
- switch (cmd)
+ rt_interrupt_enter();
+ /* read interrupt status and clear it */
+ if (uart_is_readable(uart0)) /* rx ind */
{
- /* enable interrupt */
- case RT_DEVICE_CTRL_SET_INT:
- // Set up a RX interrupt
- // We need to set up the handler first
- // And set up and enable the interrupt handlers
- irq_set_exclusive_handler(UART_IRQ, pico_uart_isr);
- irq_set_enabled(UART_IRQ, true);
-
- // Now enable the UART to send interrupts - RX only
- uart_set_irq_enables(UART_ID, true, false);
- break;
+ rt_hw_serial_isr(&uart_dev[UART0_INDEX].parent, RT_SERIAL_EVENT_RX_IND);
}
- return RT_EOK;
-}
-static int pico_uart_putc(struct rt_serial_device *serial, char c)
-{
- uart_putc_raw(uart0, c);
-
- return 1;
+ rt_interrupt_leave();
}
-
-static int pico_uart_getc(struct rt_serial_device *serial)
+#endif
+#ifdef BSP_USING_UART1
+void pico_uart1_isr(void)
{
- int ch;
-
- if (uart_is_readable(uart0))
- {
- ch = uart_get_hw(uart0)->dr;
- }
- else
+ rt_interrupt_enter();
+ /* read interrupt status and clear it */
+ if (uart_is_readable(uart1)) /* rx ind */
{
- ch =-1;
+ rt_hw_serial_isr(&uart_dev[UART1_INDEX].parent, RT_SERIAL_EVENT_RX_IND);
}
- return ch;
+ rt_interrupt_leave();
}
-
-const static struct rt_uart_ops _uart_ops =
-{
- pico_uart_configure,
- pico_uart_control,
- pico_uart_putc,
- pico_uart_getc,
- RT_NULL,
-};
+#endif
/*
- * UART Initiation
+ * UART interface
*/
-int rt_hw_uart_init(void)
+static rt_err_t pico_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
- rt_err_t ret = RT_EOK;
-
- struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
+ struct pico_uart_dev *uart = RT_NULL;
+ RT_ASSERT(serial != RT_NULL);
+ RT_ASSERT(cfg != RT_NULL);
+ uart = rt_container_of(serial, struct pico_uart_dev, parent);
- uart_init(UART_ID, 115200);
+ uart_init(uart->instance, cfg->baud_rate);
// Set the TX and RX pins by using the function select on the GPIO
// Set datasheet for more information on function select
- gpio_set_function(UART_TX_PIN, GPIO_FUNC_UART);
- gpio_set_function(UART_RX_PIN, GPIO_FUNC_UART);
-
- // Actually, we want a different speed
- // The call will return the actual baud rate selected, which will be as close as
- // possible to that requested
- uart_set_baudrate(UART_ID, BAUD_RATE);
+ gpio_set_function(uart->rx_pin, GPIO_FUNC_UART);
+ gpio_set_function(uart->tx_pin, GPIO_FUNC_UART);
// Set UART flow control CTS/RTS, we don't want these, so turn them off
- uart_set_hw_flow(UART_ID, false, false);
+ uart_set_hw_flow(uart->instance, false, false);
// Set our data format
- uart_set_format(UART_ID, DATA_BITS, STOP_BITS, PARITY);
+ uart_set_format(uart->instance, cfg->data_bits, cfg->stop_bits, UART_PARITY_NONE);
// Turn off FIFO's - we want to do this character by character
- uart_set_fifo_enabled(UART_ID, false);
-
- uart0_dev.parent.ops = &_uart_ops;
- uart0_dev.parent.config = config;
-
- ret = rt_hw_serial_register(&uart0_dev.parent,
- "uart0",
- RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
- &uart0_dev);
-
- return ret;
-}
-// INIT_DEVICE_EXPORT(rt_hw_uart_init);
+ uart_set_fifo_enabled(uart->instance, false);
-// We are using pins 0 and 1, but see the GPIO function select table in the
-// datasheet for information on which other pins can be used.
-#define UART1_TX_PIN 4
-#define UART1_RX_PIN 5
-
-static struct pico_uart1_dev uart1_dev;
-
-struct pico_uart1_dev
-{
- struct rt_serial_device parent;
- rt_uint32_t uart_periph;
- rt_uint32_t irqno;
-};
-
-void pico_uart1_isr(void)
-{
- rt_interrupt_enter();
- /* read interrupt status and clear it */
- if (uart_is_readable(uart1)) /* rx ind */
- {
- rt_hw_serial_isr(&uart1_dev.parent, RT_SERIAL_EVENT_RX_IND);
- }
-
- rt_interrupt_leave();
-}
-
-/*
- * UART interface
- */
-static rt_err_t pico_uart1_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
-{
return RT_EOK;
}
-static rt_err_t pico_uart1_control(struct rt_serial_device *serial, int cmd, void *arg)
+static rt_err_t pico_uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
+ struct pico_uart_dev *uart = RT_NULL;
+ RT_ASSERT(serial != RT_NULL);
+ uart = rt_container_of(serial, struct pico_uart_dev, parent);
+
switch (cmd)
{
/* enable interrupt */
@@ -197,86 +142,88 @@ static rt_err_t pico_uart1_control(struct rt_serial_device *serial, int cmd, voi
// Set up a RX interrupt
// We need to set up the handler first
// And set up and enable the interrupt handlers
- irq_set_exclusive_handler(UART1_IRQ, pico_uart1_isr);
- irq_set_enabled(UART1_IRQ, true);
+ irq_set_exclusive_handler(uart->irqno, uart->uart_isr);
+ irq_set_enabled(uart->irqno, true);
// Now enable the UART to send interrupts - RX only
- uart_set_irq_enables(uart1, true, false);
+ uart_set_irq_enables(uart->instance, true, false);
break;
}
return RT_EOK;
}
-static int pico_uart1_putc(struct rt_serial_device *serial, char c)
+static int pico_uart_putc(struct rt_serial_device *serial, char c)
{
- uart_putc_raw(uart1, c);
+ struct pico_uart_dev *uart = RT_NULL;
+ RT_ASSERT(serial != RT_NULL);
+ uart = rt_container_of(serial, struct pico_uart_dev, parent);
+ uart_putc_raw(uart->instance, c);
return 1;
}
-static int pico_uart1_getc(struct rt_serial_device *serial)
+static int pico_uart_getc(struct rt_serial_device *serial)
{
+ struct pico_uart_dev *uart = RT_NULL;
+ RT_ASSERT(serial != RT_NULL);
+ uart = rt_container_of(serial, struct pico_uart_dev, parent);
+
int ch;
- if (uart_is_readable(uart1))
+ if (uart_is_readable(uart->instance))
{
- ch = uart_get_hw(uart1)->dr;
+ ch = uart_get_hw(uart->instance)->dr;
}
else
{
- ch =-1;
+ ch = -1;
}
return ch;
}
-const static struct rt_uart_ops _uart1_ops =
+const static struct rt_uart_ops _uart_ops =
{
- pico_uart1_configure,
- pico_uart1_control,
- pico_uart1_putc,
- pico_uart1_getc,
+ pico_uart_configure,
+ pico_uart_control,
+ pico_uart_putc,
+ pico_uart_getc,
RT_NULL,
};
/*
* UART Initiation
*/
-int rt_hw_uart1_init(void)
+int rt_hw_uart_init(void)
{
rt_err_t ret = RT_EOK;
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
- uart_init(uart1, 115200);
-
- // Set the TX and RX pins by using the function select on the GPIO
- // Set datasheet for more information on function select
- gpio_set_function(UART1_TX_PIN, GPIO_FUNC_UART);
- gpio_set_function(UART1_RX_PIN, GPIO_FUNC_UART);
-
- // Actually, we want a different speed
- // The call will return the actual baud rate selected, which will be as close as
- // possible to that requested
- uart_set_baudrate(uart1, BAUD_RATE);
-
- // Set UART flow control CTS/RTS, we don't want these, so turn them off
- uart_set_hw_flow(uart1, false, false);
+#ifdef BSP_USING_UART0
+ uart_dev[UART0_INDEX].parent.ops = &_uart_ops;
+ uart_dev[UART0_INDEX].parent.config = config;
- // Set our data format
- uart_set_format(uart1, DATA_BITS, STOP_BITS, PARITY);
-
- // Turn off FIFO's - we want to do this character by character
- uart_set_fifo_enabled(uart1, false);
+ ret = rt_hw_serial_register(&uart_dev[UART0_INDEX].parent,
+ "uart0",
+ RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
+ &uart_dev[UART0_INDEX]);
+ RT_ASSERT(ret == RT_EOK);
+#endif
- uart1_dev.parent.ops = &_uart1_ops;
- uart1_dev.parent.config = config;
+#ifdef BSP_USING_UART1
+ uart_dev[UART1_INDEX].parent.ops = &_uart_ops;
+ uart_dev[UART1_INDEX].parent.config = config;
- ret = rt_hw_serial_register(&uart1_dev.parent,
+ ret = rt_hw_serial_register(&uart_dev[UART1_INDEX].parent,
"uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
- &uart1_dev);
+ &uart_dev[UART1_INDEX]);
+ RT_ASSERT(ret == RT_EOK);
+#endif
return ret;
}
-INIT_DEVICE_EXPORT(rt_hw_uart1_init);
+
+
+#endif /* RT_USING_SERIAL */
diff --git a/bsp/raspberry-pico/drivers/drv_uart.h b/bsp/raspberry-pico/drivers/drv_uart.h
index ac49a4c8fc..79bae1f7cc 100644
--- a/bsp/raspberry-pico/drivers/drv_uart.h
+++ b/bsp/raspberry-pico/drivers/drv_uart.h
@@ -6,6 +6,7 @@
* Change Logs:
* Date Author Notes
* 2021-01-28 flybreak first version
+ * 2023-09-26 1ridic Integrate with RT-Thread driver framework.
*/
#ifndef __USART_H__
@@ -14,6 +15,8 @@
#include <rthw.h>
#include <rtthread.h>
+#ifdef RT_USING_SERIAL
int rt_hw_uart_init(void);
+#endif
#endif
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-30 09:48:44 +0000