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/*
* File : uart_dev.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006-2013, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-01-05 Bernard the first version
* 2010-03-29 Bernard remove interrupt Tx and DMA Rx mode
* 2013-05-13 aozima update for kehong-lingtai.
*/
#include "uart/uart.h"
#include "uart_dev.h"
#include "ae210p.h"
#include "board.h"
#include "bsp_hal.h"
#include "rtdevice.h"
#include "serial.h"
#define UART_ENABLE_IRQ(n) hal_intc_irq_enable(n)
#define UART_DISABLE_IRQ(n) hal_intc_irq_disable(n)
struct uart_device
{
uint32_t uart_base;
uint32_t irq;
};
static rt_err_t __uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct uart_device *uartDev = RT_NULL;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uartDev = (struct uart_device *)serial->parent.user_data;
__drv_uart_init(uartDev->uart_base, cfg->baud_rate);
// todo : enable FIFO threshold, enable rx & rx timeout(threshold) interrupt
return RT_EOK;
}
static rt_err_t __uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct uart_device *uartDev = RT_NULL;
RT_ASSERT(serial != RT_NULL);
uartDev = (struct uart_device *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT: /* disable rx irq */
UART_DISABLE_IRQ(uartDev->irq);
break;
case RT_DEVICE_CTRL_SET_INT: /* enable rx irq */
UART_ENABLE_IRQ(uartDev->irq);
break;
default:
break;
}
return RT_EOK;
}
static int __uart_putc(struct rt_serial_device *serial, char c)
{
struct uart_device *uartDev = RT_NULL;
RT_ASSERT(serial != RT_NULL);
uartDev = (struct uart_device *)serial->parent.user_data;
__drv_uart_put_char(uartDev->uart_base, c); // Transmit Data
return 1;
}
static int __uart_getc(struct rt_serial_device *serial)
{
int ch = -1;
struct uart_device *uartDev = RT_NULL;
RT_ASSERT(serial != RT_NULL);
uartDev = (struct uart_device *)serial->parent.user_data;
ch = -1;
if (__drv_uart_is_kbd_hit(uartDev->uart_base))
{
ch = __drv_uart_get_char(uartDev->uart_base) & 0x00FF;
}
return ch;
}
static const struct rt_uart_ops __uart_ops =
{
__uart_configure,
__uart_control,
__uart_putc,
__uart_getc,
RT_NULL
};
#if RT_USING_UART01
struct uart_device uartDev01 =
{ // UART01 device driver structure
UART1_BASE,
IRQ_UART1_VECTOR
};
struct rt_serial_device serial01;
void URT01_IRQHandler(void)
{
struct uart_device *uartDev = RT_NULL;
uartDev = &uartDev01;
rt_interrupt_enter(); /* enter interrupt */
// if (uart->uart_device->Interrupt & ((1 << bsUART_TIMEOUT_INTENAB) | (1 << bsUART_RECEIVE_INTENAB))) // RX
// {
// rt_hw_serial_isr(&serial01, RT_SERIAL_EVENT_RX_IND);
// }
//
// if (uart->uart_device->Interrupt & (1 << bsUART_TRANSMIT_INTENAB)) // TX
// {
// ;
// }
//
// /* clear all interrupt */
// uart->uart_device->IntClear = (1 << bsUART_RECEIVE_INTENAB)
// | (1 << bsUART_TRANSMIT_INTENAB)
// | (1 << bsUART_TIMEOUT_INTENAB);
rt_interrupt_leave(); /* leave interrupt */
}
#endif /* RT_USING_UART01 */
#if RT_USING_UART02
struct uart_device uartDev02 =
{ // UART02 device driver structure
UART2_BASE,
IRQ_UATR2_VECTOR
};
struct rt_serial_device serial02;
void URT02_IRQHandler(void)
{
struct uart_device *uartDev = RT_NULL;
uartDev = &uartDev02;
rt_interrupt_enter(); /* enter interrupt */
uartDev = uartDev;
rt_interrupt_leave(); /* leave interrupt */
}
#endif /* RT_USING_UART02 */
void rt_hw_usart_init(void)
{
struct uart_device *uartDev = RT_NULL;
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#if RT_USING_UART01
uart = &uartDev01;
config.baud_rate = BAUD_RATE_38400;
serial01.ops = &__uart_ops;
serial01.config = config;
// set interrupt priority level
// disable interrupt
// register UART01 device
rt_hw_serial_register(&serial01, "uart01",
RT_DEVICE_FLAG_RDWR /*| RT_DEVICE_FLAG_INT_RX*/,
uartDev);
#endif /* RT_USING_UART01 */
#if RT_USING_UART02
uartDev = &uartDev02;
config.baud_rate = BAUD_RATE_38400;
serial02.ops = &__uart_ops;
serial02.config = config;
// set interrupt priority level
// disable interrupt
/* register UART02 device */
rt_hw_serial_register(&serial02, "uart02",
RT_DEVICE_FLAG_RDWR /*| RT_DEVICE_FLAG_INT_RX*/,
uartDev);
#endif /* RT_USING_UART02 */
}
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