Modified pin driver and some format

1 files changed, 421 insertions, 0 deletions

diff --git a/bsp/apollo2/board/uart.c b/bsp/apollo2/board/uart.c
new file mode 100644
index 0000000000..80a8f98d1d
--- /dev/null
+++ b/bsp/apollo2/board/uart.c
@@ -0,0 +1,421 @@
+/*
+ * File      : uart.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-15     Haley        the first version
+ */
+ 
+#include <rtdevice.h>
+#include "am_mcu_apollo.h"
+#include "board.h"
+
+/* USART0 */
+#define AM_UART0_INST         0
+
+#define UART0_GPIO_RX         2
+#define UART0_GPIO_CFG_RX     AM_HAL_PIN_2_UART0RX
+#define UART0_GPIO_TX         1
+#define UART0_GPIO_CFG_TX     AM_HAL_PIN_1_UART0TX
+
+/* USART1 */
+#define AM_UART1_INST         1
+
+#define UART1_GPIO_RX         9
+#define UART1_GPIO_CFG_RX     AM_HAL_PIN_9_UART1RX
+#define UART1_GPIO_TX         8
+#define UART1_GPIO_CFG_TX     AM_HAL_PIN_8_UART1TX
+
+/* AM uart driver */
+struct am_uart
+{
+    uint32_t uart_device;
+    uint32_t uart_interrupt;
+};
+
+/**
+ * @brief UART configuration settings
+ *
+ */
+am_hal_uart_config_t g_sUartConfig =
+{
+    .ui32BaudRate = 115200,
+    .ui32DataBits = AM_HAL_UART_DATA_BITS_8,
+    .bTwoStopBits = false,
+    .ui32Parity   = AM_HAL_UART_PARITY_NONE,
+    .ui32FlowCtrl = AM_HAL_UART_FLOW_CTRL_NONE,
+};
+
+/**
+ * @brief Enable the UART
+ *
+ * @param Uart driver
+ *
+ * This function is Enable the UART
+ *
+ * @return None.
+ */
+static void rt_hw_uart_enable(struct am_uart* uart)
+{
+    /* Enable the UART clock */
+    am_hal_uart_clock_enable(uart->uart_device);
+
+    /* Enable the UART */
+    am_hal_uart_enable(uart->uart_device);
+
+#if defined(RT_USING_UART0)
+    /* Make sure the UART RX and TX pins are enabled */
+    am_hal_gpio_pin_config(UART0_GPIO_TX, UART0_GPIO_CFG_TX);
+    am_hal_gpio_pin_config(UART0_GPIO_RX, UART0_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+    /* Make sure the UART RX and TX pins are enabled */
+    am_hal_gpio_pin_config(UART1_GPIO_TX, UART1_GPIO_CFG_TX);
+    am_hal_gpio_pin_config(UART1_GPIO_RX, UART1_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART1 */
+}
+
+/**
+ * @brief Disable the UART
+ *
+ * @param Uart driver
+ *
+ * This function is Disable the UART
+ *
+ * @return None.
+ */
+static void rt_hw_uart_disable(struct am_uart* uart)
+{
+    /* Clear all interrupts before sleeping as having a pending UART interrupt burns power */
+    am_hal_uart_int_clear(uart->uart_device, 0xFFFFFFFF);
+
+    /* Disable the UART */
+    am_hal_uart_disable(uart->uart_device);
+
+#if defined(RT_USING_UART0)
+    /* Disable the UART pins */
+    am_hal_gpio_pin_config(UART0_GPIO_TX, AM_HAL_PIN_DISABLE);
+    am_hal_gpio_pin_config(UART0_GPIO_RX, AM_HAL_PIN_DISABLE);
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+    /* Disable the UART pins */
+    am_hal_gpio_pin_config(UART1_GPIO_TX, AM_HAL_PIN_DISABLE);
+    am_hal_gpio_pin_config(UART1_GPIO_RX, AM_HAL_PIN_DISABLE);
+#endif /* RT_USING_UART1 */
+
+    /* Disable the UART clock */
+    am_hal_uart_clock_disable(uart->uart_device);
+}
+
+/**
+ * @brief UART-based string print function.
+ *
+ * @param Send buff
+ *
+ * This function is used for printing a string via the UART, which for some
+ * MCU devices may be multi-module.
+ *
+ * @return None.
+ */
+void rt_hw_uart_send_string(char *pcString)
+{
+    am_hal_uart_string_transmit_polled(AM_UART0_INST, pcString);
+
+    /* Wait until busy bit clears to make sure UART fully transmitted last byte */
+    while ( am_hal_uart_flags_get(AM_UART0_INST) & AM_HAL_UART_FR_BUSY );
+}
+
+static rt_err_t am_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
+{
+    struct am_uart* uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    RT_ASSERT(cfg != RT_NULL);
+
+    uart = (struct am_uart *)serial->parent.user_data;
+
+    RT_ASSERT(uart != RT_NULL);
+
+    /* Get the configure */
+    g_sUartConfig.ui32BaudRate = cfg->baud_rate;
+    g_sUartConfig.ui32DataBits = cfg->data_bits;
+
+    if (cfg->stop_bits == STOP_BITS_1)
+        g_sUartConfig.bTwoStopBits = false;
+    else if (cfg->stop_bits == STOP_BITS_2)
+        g_sUartConfig.bTwoStopBits = true;
+
+    g_sUartConfig.ui32Parity = cfg->parity;
+    g_sUartConfig.ui32FlowCtrl = AM_HAL_UART_PARITY_NONE;
+
+    /* Configure the UART */
+    am_hal_uart_config(uart->uart_device, &g_sUartConfig);
+
+    /* Enable the UART */
+    am_hal_uart_enable(uart->uart_device);
+
+    return RT_EOK;
+}
+
+static rt_err_t am_control(struct rt_serial_device *serial, int cmd, void *arg)
+{
+    struct am_uart* uart;
+    //rt_uint32_t ctrl_arg = (rt_uint32_t)(arg);
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct am_uart *)serial->parent.user_data;
+
+    RT_ASSERT(uart != RT_NULL);
+
+    switch (cmd)
+    {
+        /* disable interrupt */
+        case RT_DEVICE_CTRL_CLR_INT:
+            rt_hw_uart_disable(uart);
+            break;
+        /* enable interrupt */
+        case RT_DEVICE_CTRL_SET_INT:
+            rt_hw_uart_enable(uart);
+            break;
+        /* UART config */
+        case RT_DEVICE_CTRL_CONFIG :
+            break;
+    }
+
+    return RT_EOK;
+}
+
+static int am_putc(struct rt_serial_device *serial, char c)
+{
+    struct am_uart* uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct am_uart *)serial->parent.user_data;
+
+    RT_ASSERT(uart != RT_NULL);
+
+    am_hal_uart_char_transmit_polled(uart->uart_device, c);
+
+    return 1;
+}
+
+static int am_getc(struct rt_serial_device *serial)
+{
+    char c;
+    int ch;
+    struct am_uart* uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct am_uart *)serial->parent.user_data;
+
+    RT_ASSERT(uart != RT_NULL);
+
+    ch = -1;
+    if ((am_hal_uart_flags_get(uart->uart_device) & AM_HAL_UART_FR_RX_EMPTY) == 0)
+    {
+        am_hal_uart_char_receive_polled(uart->uart_device, &c);
+        ch = c & 0xff;
+    }
+
+    return ch;
+}
+
+/**
+ * Uart common interrupt process. This need add to uart ISR.
+ *
+ * @param serial serial device
+ */
+static void uart_isr(struct rt_serial_device *serial)
+{
+    uint32_t status;
+
+    RT_ASSERT(serial != RT_NULL);
+    struct am_uart *uart = (struct am_uart *) serial->parent.user_data;
+
+    RT_ASSERT(uart != RT_NULL);
+
+    /* Read the interrupt status */
+    status = am_hal_uart_int_status_get(uart->uart_device, false);
+
+    //rt_kprintf("status is %d\r\n", status);
+
+    /* Clear the UART interrupt */
+    am_hal_uart_int_clear(uart->uart_device, status);
+
+    if (status & (AM_HAL_UART_INT_RX_TMOUT))
+    {
+        rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
+    }
+
+    if (status & AM_HAL_UART_INT_RX)
+    {
+        rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
+    }
+
+    if (status & AM_HAL_UART_INT_TX)
+    {
+        // rt_hw_serial_isr(serial, RT_SERIAL_EVENT_TX_DONE);
+    }
+}
+
+static const struct rt_uart_ops am_uart_ops =
+{
+    am_configure,
+    am_control,
+    am_putc,
+    am_getc,
+};
+
+#if defined(RT_USING_UART0)
+/* UART0 device driver structure */
+struct am_uart uart0 =
+{
+    AM_UART0_INST,
+    AM_HAL_INTERRUPT_UART0
+};
+static struct rt_serial_device serial0;
+
+void am_uart0_isr(void)
+{
+    /* enter interrupt */
+    rt_interrupt_enter();
+
+    uart_isr(&serial0);
+
+    /* leave interrupt */
+    rt_interrupt_leave();
+}
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+/* UART1 device driver structure */
+struct am_uart uart1 =
+{
+    AM_UART1_INST,
+    AM_HAL_INTERRUPT_UART1
+};
+static struct rt_serial_device serial1;
+
+void am_uart1_isr(void)
+{
+    /* enter interrupt */
+    rt_interrupt_enter();
+
+    uart_isr(&serial1);
+
+    /* leave interrupt */
+    rt_interrupt_leave();
+}
+#endif /* RT_USING_UART1 */
+
+static void GPIO_Configuration(void)
+{
+#if defined(RT_USING_UART0)
+    /* Make sure the UART RX and TX pins are enabled */
+    am_hal_gpio_pin_config(UART0_GPIO_TX, UART0_GPIO_CFG_TX);
+    am_hal_gpio_pin_config(UART0_GPIO_RX, UART0_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+    /* Make sure the UART RX and TX pins are enabled */
+    am_hal_gpio_pin_config(UART1_GPIO_TX, UART1_GPIO_CFG_TX);
+    am_hal_gpio_pin_config(UART1_GPIO_RX, UART1_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART1 */
+}
+
+static void RCC_Configuration(struct am_uart* uart)
+{
+    /* Power on the selected UART */
+    am_hal_uart_pwrctrl_enable(uart->uart_device);
+
+    /* Start the UART interface, apply the desired configuration settings */
+    am_hal_uart_clock_enable(uart->uart_device);
+
+    /* Disable the UART before configuring it */
+    am_hal_uart_disable(uart->uart_device);
+
+    /* Configure the UART */
+    am_hal_uart_config(uart->uart_device, &g_sUartConfig);
+
+    /* Enable the UART */
+    am_hal_uart_enable(uart->uart_device);
+
+    /* Enable the UART FIFO */
+    am_hal_uart_fifo_config(uart->uart_device, AM_HAL_UART_TX_FIFO_1_2 | AM_HAL_UART_RX_FIFO_1_2);
+}
+
+static void NVIC_Configuration(struct am_uart* uart)
+{
+    /* Enable interrupts */
+    am_hal_uart_int_enable(uart->uart_device, AM_HAL_UART_INT_RX_TMOUT | AM_HAL_UART_INT_RX);
+
+    /* Enable the uart interrupt in the NVIC */
+    am_hal_interrupt_enable(uart->uart_interrupt);
+}
+
+/**
+ * @brief Initialize the UART
+ *
+ * This function initialize the UART
+ *
+ * @return None.
+ */
+void rt_hw_uart_init(void)
+{
+    struct am_uart* uart;
+    struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
+
+    GPIO_Configuration();
+
+#if defined(RT_USING_UART0)
+    uart = &uart0;
+    config.baud_rate = BAUD_RATE_115200;
+
+    RCC_Configuration(uart);
+    NVIC_Configuration(uart);
+
+    serial0.ops    = &am_uart_ops;
+    serial0.config = config;
+
+    /* register UART1 device */
+    rt_hw_serial_register(&serial0, "uart0",
+                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
+                          RT_DEVICE_FLAG_INT_TX, uart);
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+    uart = &uart1;
+    config.baud_rate = BAUD_RATE_115200;
+
+    RCC_Configuration(uart);
+    NVIC_Configuration(uart);
+
+    serial1.ops    = &am_uart_ops;
+    serial1.config = config;
+
+    /* register UART1 device */
+    rt_hw_serial_register(&serial1, "uart1",
+                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
+                          RT_DEVICE_FLAG_INT_TX, uart);
+#endif /* RT_USING_UART1 */
+}
+
+/*@}*/