[bsp][bluetrum] Optimizing the uart driver

bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig

@@ -35,14 +35,34 @@ menu "On-chip Peripheral Drivers"
                 bool "Enable UART0"
                 select RT_USING_SERIAL
                 default y
+			if BSP_USING_UART0
+				config BSP_UART0_FIFO_SIZE
+					int "BSP_UART0_FIFO_SIZE"
+					range 5 255
+					default 10
+			endif
+
             config BSP_USING_UART1
                 bool "Enable UART1"
                 select RT_USING_SERIAL
                 default n
+			if BSP_USING_UART1
+				config BSP_UART1_FIFO_SIZE
+					int "BSP_UART1_FIFO_SIZE"
+					range 5 255
+					default 10
+			endif
+
             config BSP_USING_UART2
                 bool "Enable UART2"
                 select RT_USING_SERIAL
                 default n
+			if BSP_USING_UART2
+				config BSP_UART2_FIFO_SIZE
+					int "BSP_UART2_FIFO_SIZE"
+					range 5 255
+					default 10
+			endif
         endif
 
     config BSP_USING_SDIO
@@ -174,12 +194,12 @@ menu "On-chip Peripheral Drivers"
         default n
         if BSP_USING_ONCHIP_RTC
             config RTC_USING_INTERNAL_CLK
-            bool "Using internal clock RTC"
-            default y
+	            bool "Using internal clock RTC"
+	            default y
             config RTC_USING_1S_INT
-            bool "Using 1 second interrupt"
-            depends on RT_USING_ALARM
-            default n
+	            bool "Using 1 second interrupt"
+	            depends on RT_USING_ALARM
+	            default n
         endif
 
     menuconfig BSP_USING_ADC

bsp/bluetrum/ab32vg1-ab-prougen/board/board.c

@@ -21,6 +21,7 @@ void set_cpu_irq_comm(void (*irq_hook)(void));
 void load_cache();
 void os_cache_init(void);
 void sys_error_hook(uint8_t err_no);
+void huart_timer_isr(void);
 
 typedef void (*spiflash_init_func)(uint8_t sf_read, uint8_t dummy);
 
@@ -71,6 +72,9 @@ void timer0_isr(int vector, void *param)
     rt_interrupt_enter();
     TMR0CPND = BIT(9);
     rt_tick_increase();
+#ifdef RT_USING_SERIAL
+    huart_timer_isr();
+#endif
     rt_interrupt_leave();
 }
 

bsp/bluetrum/libraries/hal_drivers/SConscript

@@ -4,6 +4,7 @@ from building import *
 
 cwd     = GetCurrentDir()
 src     = []
+src    += ['drv_common.c']
 path    = [cwd]
 path   += [cwd + '/config']
 

bsp/bluetrum/libraries/hal_drivers/drv_common.c

+#include "drv_common.h"
+
+#define DRV_THREAD_PRIORITY         18
+#define DRV_THREAD_STACK_SIZE       512
+#define DRV_THREAD_TIMESLICE        5
+
+enum {
+    MSG_UART0_IRQ,
+    MSG_UART1_IRQ,
+    MSG_UART2_IRQ,
+};
+
+static rt_thread_t drv_tid = RT_NULL;
+static rt_mq_t drv_mq = RT_NULL;
+
+void uart0_irq_process(void);
+void uart1_irq_process(void);
+
+RT_SECTION(".irq.uart")
+void uart0_irq_post(void)
+{
+    uint8_t mq_msg = MSG_UART0_IRQ;
+    rt_mq_send(drv_mq, &mq_msg, 1);
+}
+
+RT_SECTION(".irq.uart")
+void uart1_irq_post(void)
+{
+    uint8_t mq_msg = MSG_UART1_IRQ;
+    rt_mq_send(drv_mq, &mq_msg, 1);
+}
+
+RT_SECTION(".irq.uart")
+void uart2_irq_post(void)
+{
+    uint8_t mq_msg = MSG_UART2_IRQ;
+    rt_mq_send(drv_mq, &mq_msg, 1);
+}
+
+static void drv_thread_entry(void *parameter)
+{
+    uint8_t mq_msg = 0;
+    while (1) {
+        rt_mq_recv(drv_mq, &mq_msg, 1, RT_WAITING_FOREVER);
+        switch (mq_msg) {
+#ifdef BSP_USING_UART0
+            case MSG_UART0_IRQ:
+                uart0_irq_process();
+                break;
+#endif
+#ifdef BSP_USING_UART1
+            case MSG_UART1_IRQ:
+                uart1_irq_process();
+                break;
+#endif
+#ifdef BSP_USING_UART2
+            case MSG_UART2_IRQ:
+                uart2_irq_process();
+                break;
+#endif
+            default:
+                break;
+        }
+    }
+}
+
+static int drv_thread_init(void)
+{
+    drv_mq = rt_mq_create("drv", 1, 128, RT_IPC_FLAG_FIFO);
+    drv_tid = rt_thread_create("drv",
+            drv_thread_entry,
+            RT_NULL,
+            DRV_THREAD_STACK_SIZE,
+            DRV_THREAD_PRIORITY,
+            DRV_THREAD_TIMESLICE);
+
+    if (drv_tid != RT_NULL)
+        rt_thread_startup(drv_tid);
+}
+INIT_PREV_EXPORT(drv_thread_init);

bsp/bluetrum/libraries/hal_drivers/drv_common.h

@@ -17,4 +17,8 @@
 
 #define GET_PIN(PORTx,PIN) (uint8_t)__AB32_GET_PIN_##PORTx(PIN)
 
+void uart0_irq_post(void);
+void uart1_irq_post(void);
+void uart2_irq_post(void);
+
 #endif // DRV_COMMON_H__

bsp/bluetrum/libraries/hal_drivers/drv_usart.c

@@ -10,7 +10,7 @@
 
 #include "board.h"
 #include "drv_usart.h"
-#include <shell.h>
+#include "api_huart.h"
 
 #ifdef RT_USING_SERIAL
 
@@ -40,6 +40,7 @@ static struct ab32_uart_config uart_config[] =
         .name = "uart0",
         .instance = UART0_BASE,
         .mode = UART_MODE_TX_RX | UART_MODE_1LINE,
+        .fifo_size = BSP_UART0_FIFO_SIZE,
     },
 #endif
 #ifdef BSP_USING_UART1
@@ -47,6 +48,7 @@ static struct ab32_uart_config uart_config[] =
         .name = "uart1",
         .instance = UART1_BASE,
         .mode = UART_MODE_TX_RX,
+        .fifo_size = BSP_UART1_FIFO_SIZE,
     },
 #endif
 #ifdef BSP_USING_UART2
@@ -54,12 +56,17 @@ static struct ab32_uart_config uart_config[] =
         .name = "uart2",
         .instance = UART2_BASE,
         .mode = UART_MODE_TX_RX,
+        .fifo_size = BSP_UART2_FIFO_SIZE,
     }
 #endif
 };
 
 static struct ab32_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
 
+#ifdef HUART_ENABLE
+static uint8_t huart_dma[512];
+#endif
+
 static rt_err_t ab32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
 {
     struct ab32_uart *uart;
@@ -101,7 +108,14 @@ static rt_err_t ab32_configure(struct rt_serial_device *serial, struct serial_co
     uart->dma_rx.last_index = 0;
 #endif
 
-    hal_uart_init(&uart->handle);
+    if (!uart->uart_dma_flag) {
+        hal_uart_init(&uart->handle);
+    }
+#ifdef HUART_ENABLE
+    else {
+        huart_init_do(HUART_TR_PB3, HUART_TR_PB4, uart->handle.init.baud, huart_dma, 512);
+    }
+#endif
 
     return RT_EOK;
 }
@@ -141,25 +155,55 @@ static int ab32_putc(struct rt_serial_device *serial, char ch)
     RT_ASSERT(serial != RT_NULL);
 
     uart = rt_container_of(serial, struct ab32_uart, serial);
-    hal_uart_clrflag(uart->handle.instance,  UART_FLAG_TXPND);
-    hal_uart_write(uart->handle.instance, ch);
-    while(hal_uart_getflag(uart->handle.instance, UART_FLAG_TXPND) == 0);
+
+    if (!uart->uart_dma_flag) {
+        hal_uart_clrflag(uart->handle.instance,  UART_FLAG_TXPND);
+        hal_uart_write(uart->handle.instance, ch);
+        while(hal_uart_getflag(uart->handle.instance, UART_FLAG_TXPND) == 0);
+    }
+#ifdef HUART_ENABLE
+    else {
+        huart_putchar(ch);
+    }
+#endif
 
     return 1;
 }
 
-RT_SECTION(".irq.usart")
 static int ab32_getc(struct rt_serial_device *serial)
 {
     int ch;
     struct ab32_uart *uart;
     RT_ASSERT(serial != RT_NULL);
+
     uart = rt_container_of(serial, struct ab32_uart, serial);
 
     ch = -1;
-    if(hal_uart_getflag(uart->handle.instance, UART_FLAG_RXPND) != HAL_RESET) {
-        ch = hal_uart_read(uart->handle.instance);
-        hal_uart_clrflag(uart->handle.instance, UART_FLAG_RXPND);
+    switch ((uint32_t)(uart->handle.instance)) {
+        case (uint32_t)UART0_BASE:
+            if (uart->rx_idx != uart->rx_idx_prev) {
+                ch = (int)(uart->rx_buf[uart->rx_idx_prev++ % 10]);
+            }
+            break;
+        case (uint32_t)UART1_BASE:
+#ifdef HUART_ENABLE
+            if ((uart->uart_dma_flag) && (huart_get_rxcnt())) {
+                ch = huart_getchar();
+            } else
+#endif
+            {
+                if (uart->rx_idx != uart->rx_idx_prev) {
+                    ch = (int)(uart->rx_buf[uart->rx_idx_prev++ % 10]);
+                }
+            }
+            break;
+        case (uint32_t)UART2_BASE:
+            if (uart->rx_idx != uart->rx_idx_prev) {
+                ch = (int)(uart->rx_buf[uart->rx_idx_prev++ % 10]);
+            }
+            break;
+        default:
+            break;
     }
 
     return ch;
@@ -170,78 +214,24 @@ static rt_size_t ab32_dma_transmit(struct rt_serial_device *serial, rt_uint8_t *
     return -1;
 }
 
-extern struct finsh_shell *shell;
-
-RT_SECTION(".irq.usart")
-static rt_err_t shell_rx_ind(void)
+void uart0_irq_process(void)
 {
-    RT_ASSERT(shell != RT_NULL);
-
-    /* release semaphore to let finsh thread rx data */
-    rt_sem_release(&shell->rx_sem);
-
-    return RT_EOK;
+    rt_hw_serial_isr(&(uart_obj[UART0_INDEX].serial), RT_SERIAL_EVENT_RX_IND);
 }
 
-RT_SECTION(".irq.usart")
-void uart_irq_process(struct rt_serial_device *serial)
+#ifdef BSP_USING_UART1
+void uart1_irq_process(void)
 {
-    int ch = -1;
-    rt_base_t level;
-    struct rt_serial_rx_fifo* rx_fifo;
-
-    /* interrupt mode receive */
-    rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx;
-    RT_ASSERT(rx_fifo != RT_NULL);
-
-    while (1)
-    {
-        ch = serial->ops->getc(serial);
-        if (ch == -1) break;
-
-
-        /* disable interrupt */
-        level = rt_hw_interrupt_disable();
-
-        rx_fifo->buffer[rx_fifo->put_index] = ch;
-        rx_fifo->put_index += 1;
-        if (rx_fifo->put_index >= serial->config.bufsz) rx_fifo->put_index = 0;
-
-        /* if the next position is read index, discard this 'read char' */
-        if (rx_fifo->put_index == rx_fifo->get_index)
-        {
-            rx_fifo->get_index += 1;
-            rx_fifo->is_full = RT_TRUE;
-            if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
-
-            // _serial_check_buffer_size();
-        }
-
-        /* enable interrupt */
-        rt_hw_interrupt_enable(level);
-    }
-
-    rt_size_t rx_length;
-
-    /* get rx length */
-    level = rt_hw_interrupt_disable();
-    rx_length = (rx_fifo->put_index >= rx_fifo->get_index)? (rx_fifo->put_index - rx_fifo->get_index):
-        (serial->config.bufsz - (rx_fifo->get_index - rx_fifo->put_index));
-    rt_hw_interrupt_enable(level);
-
-    if ((serial->parent.rx_indicate != RT_NULL) && (rx_length != 0)) {
-    #ifdef RT_CONSOLE_DEVICE_NAME
-        if (serial == &uart_obj[*(RT_CONSOLE_DEVICE_NAME + 4) - '0'].serial) {
-            shell_rx_ind();
-        } else
-    #endif
-        {
-            rt_kprintf("rx_indicate must loacted in the .comm section!\n");
-            //serial->parent.rx_indicate(&serial->parent, rx_length);
-        }
-    }
+    rt_hw_serial_isr(&(uart_obj[UART1_INDEX].serial), RT_SERIAL_EVENT_RX_IND);
+}
+#endif
 
+#ifdef BSP_USING_UART2
+void uart2_irq_process(void)
+{
+    rt_hw_serial_isr(&(uart_obj[UART2_INDEX].serial), RT_SERIAL_EVENT_RX_IND);
 }
+#endif
 
 RT_SECTION(".irq.usart")
 static void uart_isr(int vector, void *param)
@@ -251,25 +241,50 @@ static void uart_isr(int vector, void *param)
 #ifdef BSP_USING_UART0
     if(hal_uart_getflag(UART0_BASE, UART_FLAG_RXPND))       //RX one byte finish
     {
-        uart_irq_process(&(uart_obj[UART0_INDEX].serial));
+        uart_obj[0].rx_buf[uart_obj[0].rx_idx++ % 10] = hal_uart_read(UART0_BASE);
+        hal_uart_clrflag(UART0_BASE, UART_FLAG_RXPND);
+        uart0_irq_post();
     }
 #endif
 #ifdef BSP_USING_UART1
     if(hal_uart_getflag(UART1_BASE, UART_FLAG_RXPND))       //RX one byte finish
     {
-        uart_irq_process(&(uart_obj[UART1_INDEX].serial));
+        uart_obj[1].rx_buf[uart_obj[1].rx_idx++ % 10] = hal_uart_read(UART1_BASE);
+        hal_uart_clrflag(UART1_BASE, UART_FLAG_RXPND);
+        uart1_irq_post();
     }
 #endif
 #ifdef BSP_USING_UART2
     if(hal_uart_getflag(UART2_BASE, UART_FLAG_RXPND))       //RX one byte finish
     {
-        uart_irq_process(&(uart_obj[UART2_INDEX].serial));
+        uart_obj[2].rx_buf[uart_obj[2].rx_idx++ % 10] = hal_uart_read(UART2_BASE);
+        hal_uart_clrflag(UART2_BASE, UART_FLAG_RXPND);
+        uart2_irq_post();
     }
 #endif
 
     rt_interrupt_leave();
 }
 
+#ifdef HUART_ENABLE
+RT_SECTION(".irq.huart")
+void huart_timer_isr(void)
+{
+    huart_if_rx_ovflow();
+
+    if (0 == huart_get_rxcnt()) {
+        return;
+    }
+
+    uart1_irq_post();
+}
+#else
+RT_SECTION(".irq.huart")
+void huart_timer_isr(void)
+{
+}
+#endif
+
 static const struct rt_uart_ops ab32_uart_ops =
 {
     .configure = ab32_configure,
@@ -291,9 +306,17 @@ int rt_hw_usart_init(void)
     {
         /* init UART object */
         uart_obj[i].config          = &uart_config[i];
+        uart_obj[i].rx_idx          = 0;
+        uart_obj[i].rx_idx_prev     = 0;
         uart_obj[i].serial.ops      = &ab32_uart_ops;
         uart_obj[i].serial.config   = config;
         uart_obj[i].serial.config.baud_rate = 1500000;
+        uart_obj[i].rx_buf          = rt_malloc(uart_config[i].fifo_size);
+
+        if (uart_obj[i].rx_buf == RT_NULL) {
+            LOG_E("uart%d malloc failed!", i);
+            continue;
+        }
 
         /* register UART device */
         result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
@@ -305,7 +328,7 @@ int rt_hw_usart_init(void)
         RT_ASSERT(result == RT_EOK);
     }
 
-   return result;
+    return result;
 }
 
 #endif

bsp/bluetrum/libraries/hal_drivers/drv_usart.h

@@ -19,9 +19,10 @@
 struct ab32_uart_config
 {
     const char *name;
-    hal_sfr_t instance;
-    uint8_t mode;
-    uint8_t reserve[3];
+    hal_sfr_t   instance;
+    uint8_t     mode;
+    uint16_t    fifo_size;
+    uint8_t     reserve[1];
     // struct dma_config *dma_rx;
     // struct dma_config *dma_tx;
 };
@@ -45,6 +46,9 @@ struct ab32_uart
 #endif
     rt_uint16_t uart_dma_flag;
     struct rt_serial_device serial;
+    rt_uint8_t *rx_buf;
+    rt_uint8_t rx_idx;
+    rt_uint8_t rx_idx_prev;
 };
 
 #endif

bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_huart.h

+#ifndef API_HUART_H__
+#define API_HUART_H__
+
+enum {
+    HUART_TR_PA7    = 0,
+    HUART_TR_PB2,
+    HUART_TR_PB3,
+    HUART_TR_PE7,
+    HUART_TR_PA1,
+    HUART_TR_PA6,
+    HUART_TR_PB1,
+    HUART_TR_PB4,
+    HUART_TR_PE6,
+    HUART_TR_PA0,
+};
+
+void huart_init_do(uint8_t tx_port, uint8_t rx_port, uint32_t baud_rate, uint8_t *buf, uint16_t buf_size);
+void huart_setbaudrate(unsigned int baudrate);
+void huart_putchar(const char ch);
+void huart_tx(const void *buf, unsigned int len);
+unsigned int huart_get_rxcnt(void);
+void huart_rxfifo_clear(void);
+char huart_getchar(void);
+void huart_exit(void);
+
+void huart_if_rx_ovflow(void);
+
+#endif