[bsp][mchp][samd51] uart support serial v2

bsp/microchip/common/board/serial.c

@@ -4,8 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
- * Date        Author    Email                    Notes
- * 2019-07-16  Kevin.Liu kevin.liu.mchp@gmail.com First Release
+ * Date        Author     Email                     Notes
+ * 2019-07-16  Kevin.Liu  kevin.liu.mchp@gmail.com  First Release
+ * 2023-09-16  luhuadong  luhuadong@163.com         support serial v2
  */
 
 #include <rtthread.h>
@@ -17,209 +18,29 @@
 /* SAM MCU serial device */
 static struct rt_serial_device sam_serial;
 
-#ifdef SOC_SAMD51
-
-/**
- * @brief Configure serial port
- *
- * This function will configure UART baudrate, parity and so on.
- *
- * @return RT_EOK.
- */
-static rt_err_t serial_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
-{
-    struct usart_sync_descriptor* desc;
-
-    RT_ASSERT(serial != RT_NULL);
-
-    desc = (struct usart_sync_descriptor *)serial->parent.user_data;
-
-    RT_ASSERT(desc != RT_NULL);
-    RT_ASSERT(cfg  != RT_NULL);
-
-    usart_sync_disable(desc);
-
-    /* Set baudrate */
-    usart_sync_set_baud_rate(desc, (const uint32_t)cfg->baud_rate);
-
-    /* Set stop bit */
-    if (cfg->stop_bits == STOP_BITS_1)
-        usart_sync_set_stopbits(desc, USART_STOP_BITS_ONE);
-    else if (cfg->stop_bits == STOP_BITS_2)
-        usart_sync_set_stopbits(desc, USART_STOP_BITS_TWO);
-
-    if (cfg->bit_order == BIT_ORDER_LSB)
-        usart_sync_set_data_order(desc, USART_DATA_ORDER_LSB);
-    else if (cfg->bit_order == BIT_ORDER_MSB)
-        usart_sync_set_data_order(desc, USART_DATA_ORDER_MSB);
-
-    /* Set character size */
-    switch (cfg->data_bits)
-    {
-        case DATA_BITS_5:
-            usart_sync_set_character_size(desc, USART_CHARACTER_SIZE_5BITS);
-            break;
-        case DATA_BITS_6:
-            usart_sync_set_character_size(desc, USART_CHARACTER_SIZE_6BITS);
-            break;
-        case DATA_BITS_7:
-            usart_sync_set_character_size(desc, USART_CHARACTER_SIZE_7BITS);
-            break;
-        case DATA_BITS_8:
-            usart_sync_set_character_size(desc, USART_CHARACTER_SIZE_8BITS);
-            break;
-        case DATA_BITS_9:
-            usart_sync_set_character_size(desc, USART_CHARACTER_SIZE_9BITS);
-            break;
-        default:
-            break;
-    }
-
-    if (cfg->parity == PARITY_NONE)
-        usart_sync_set_parity(desc, USART_PARITY_NONE);
-    else if (cfg->parity == PARITY_ODD)
-        usart_sync_set_parity(desc, USART_PARITY_ODD);
-    else if (cfg->parity == PARITY_EVEN)
-        usart_sync_set_parity(desc, USART_PARITY_EVEN);
-
-    usart_sync_enable(desc);
-
-    return RT_EOK;
-}
-
-/**
- * @brief Control serial port
- *
- * This function provide UART enable/disable control.
- *
- * @return RT_EOK.
- */
-static rt_err_t serial_control(struct rt_serial_device *serial, int cmd, void *arg)
+static void serial_rxcallback(const struct usart_async_descriptor *const io_descr)
 {
-    struct usart_sync_descriptor* desc;
-
-    RT_ASSERT(serial != RT_NULL);
-    desc = (struct usart_sync_descriptor *)serial->parent.user_data;
+    (void)io_descr;
 
-    RT_ASSERT(desc != RT_NULL);
+    /* enter interrupt */
+    rt_interrupt_enter();
 
-    switch (cmd)
-    {
-        /* disable interrupt */
-        case RT_DEVICE_CTRL_CLR_INT:
-            usart_sync_disable(desc);
-            break;
-        /* enable interrupt */
-        case RT_DEVICE_CTRL_SET_INT:
-            usart_sync_enable(desc);
-            break;
-        /* UART config */
-        case RT_DEVICE_CTRL_CONFIG: // RT_SERIAL_RX_NON_BLOCKING or RT_SERIAL_RX_BLOCKING
-                                    // RT_SERIAL_TX_NON_BLOCKING or RT_SERIAL_TX_BLOCKING
-            break;
 #ifdef RT_USING_SERIAL_V2
-        case RT_DEVICE_CHECK_OPTMODE:
-            break;
-#endif
-        default:
-            break;
-    }
+    struct rt_serial_rx_fifo *rx_fifo;
+    uint8_t data;
 
-    return RT_EOK;
-}
+    rx_fifo = (struct rt_serial_rx_fifo *)sam_serial.serial_rx;
+    RT_ASSERT(rx_fifo != RT_NULL);
 
-/**
- * @brief Serial sends a char
- *
- * This function will send a char to the UART
- *
- * @return 1.
- */
-static int serial_putc(struct rt_serial_device *serial, char c)
-{
-    struct usart_sync_descriptor* desc;
-
-    RT_ASSERT(serial != RT_NULL);
-    desc = (struct usart_sync_descriptor *)serial->parent.user_data;
-
-    RT_ASSERT(desc != RT_NULL);
-
-    while (usart_sync_is_tx_empty(desc) == 0);
-    _usart_sync_write_byte(&TARGET_IO.device, (uint8_t)c);
-
-    return 1;
-}
-
-/**
- * @brief Serial gets a char
- *
- * This function will get a char from the UART
- *
- * @return received char character or -1 if no char received.
- */
-static int serial_getc(struct rt_serial_device *serial)
-{
-    char c;
-    int ch;
-    struct usart_sync_descriptor* desc;
-
-    RT_ASSERT(serial != RT_NULL);
-    desc = (struct usart_sync_descriptor *)serial->parent.user_data;
-
-    RT_ASSERT(desc != RT_NULL);
-
-    ch = -1;
-    if (usart_sync_is_rx_not_empty(desc))
-    {
-        io_read(&desc->io, (uint8_t *)&c, 1);
-        ch = c & 0xff;
-    }
-
-    return ch;
-}
-
-static const struct rt_uart_ops sam_serial_ops =
-{
-    serial_configure,
-    serial_control,
-    serial_putc,
-    serial_getc,
-};
-
-/**
- * @brief Initialize the UART
- *
- * This function initialize the UART
- *
- * @return None.
- */
-int rt_hw_uart_init(void)
-{
-    struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
-    config.baud_rate = DEFAULT_USART_BAUD_RATE;
-
-    sam_serial.ops       = &sam_serial_ops;
-    sam_serial.config    = config;
-    sam_serial.serial_rx = RT_NULL;
-    sam_serial.serial_rx = RT_NULL;
-    rt_hw_serial_register(&sam_serial, RT_CONSOLE_DEVICE_NAME,
-                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
-                          RT_DEVICE_FLAG_INT_TX, (void *)&TARGET_IO);
-
-    return 0;
-}
-
-#else
+    do {
+        ringbuffer_get((struct ringbuffer *const)&io_descr->rx, &data);
+        rt_ringbuffer_putchar(&(rx_fifo->rb), data);
+    } while (0); // maybe not only one byte
 
-static void serial_rxcallback(const struct usart_async_descriptor *const io_descr)
-{
-    (void)io_descr;
-
-    /* enter interrupt */
-    rt_interrupt_enter();
+#endif
 
     /* Notify Serial driver to process RX data */
-    rt_hw_serial_isr(&sam_serial, RT_SERIAL_EVENT_RX_IND);
+    rt_hw_serial_isr(&sam_serial, RT_SERIAL_EVENT_RX_IND); // or RT_SERIAL_EVENT_RX_DMADONE
 
     /* leave interrupt */
     rt_interrupt_leave();
@@ -334,7 +155,14 @@ static rt_err_t serial_control(struct rt_serial_device *serial, int cmd, void *a
             usart_async_enable(desc);
             break;
         /* UART config */
-        case RT_DEVICE_CTRL_CONFIG :
+        case RT_DEVICE_CTRL_CONFIG: // RT_SERIAL_RX_NON_BLOCKING or RT_SERIAL_RX_BLOCKING
+                                    // RT_SERIAL_TX_NON_BLOCKING or RT_SERIAL_TX_BLOCKING
+            break;
+#ifdef RT_USING_SERIAL_V2
+        case RT_DEVICE_CHECK_OPTMODE:
+            break;
+#endif
+        default:
             break;
     }
 
@@ -409,12 +237,13 @@ static const struct rt_uart_ops sam_serial_ops =
 int rt_hw_uart_init(void)
 {
     struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
+    config.baud_rate = DEFAULT_USART_BAUD_RATE;
 
     sam_serial.ops       = &sam_serial_ops;
     sam_serial.config    = config;
-    sam_serial.serial_rx = RT_NULL;
-    sam_serial.serial_rx = RT_NULL;
-    rt_hw_serial_register(&sam_serial, RT_CONSOLE_DEVICE_NAME,
+    // sam_serial.serial_rx = RT_NULL;
+    // sam_serial.serial_tx = RT_NULL;
+    rt_hw_serial_register(&sam_serial, "uart0" /* RT_CONSOLE_DEVICE_NAME */,
                           RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
                           RT_DEVICE_FLAG_INT_TX, (void *)&TARGET_IO);
 
@@ -423,7 +252,3 @@ int rt_hw_uart_init(void)
 
     return 0;
 }
-
-#endif
-
-/*@}*/

bsp/microchip/samd51-adafruit-metro-m4/board/board.c

@@ -21,7 +21,7 @@ extern int rt_hw_uart_init(void);
 #endif
 
 static struct io_descriptor* g_stdio;
-static uint8_t board_info[48] = "Adafruit Metro M4 Express, Microchip SAMD51\n";
+static uint8_t board_info[32] = "* Adafruit Metro M4 Express\r\n"; //Microchip SAMD51
 
 void rt_hw_console_output(const char *str)
 {