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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-07-15 yby the first version
*/
#include "drv_uart.h"
#ifdef RT_USING_SERIAL
#include "uart_config.h"
#include "interrupt.h"
#include "uart.h"
#define LOG_TAG "drv.uart"
#include <drv_log.h>
#if !defined(BSP_USING_UART0)&&!defined(BSP_USING_UART1)&&!defined(BSP_USING_UART2)&&!defined(BSP_USING_UART3)
#error "Please define at least one BSP_USING_UARTx"
#endif
enum
{
#ifdef BSP_USING_UART0
UART0_INDEX,
#endif
#ifdef BSP_USING_UART1
UART1_INDEX,
#endif
#ifdef BSP_USING_UART2
UART2_INDEX,
#endif
#ifdef BSP_USING_UART3
UART3_INDEX,
#endif
};
uint32_t uart_intbase[] =
{
#ifdef BSP_USING_UART0
INT_UART0,
#endif
#ifdef BSP_USING_UART1
INT_UART1,
#endif
#ifdef BSP_USING_UART2
INT_UART2,
#endif
#ifdef BSP_USING_UART3
INT_UART3
#endif
};
static struct msp432_uart_config uart_config[] =
{
#ifdef BSP_USING_UART0
UART0_CONFIG,
#endif
#ifdef BSP_USING_UART1
UART1_CONFIG,
#endif
#ifdef BSP_USING_UART2
UART2_CONFIG,
#endif
#ifdef BSP_USING_UART3
UART3_CONFIG,
#endif
};
static struct msp432_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
static rt_err_t msp432_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct msp432_uart *uart;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = rt_container_of(serial, struct msp432_uart, serial);
UARTConfigSetExpClk(uart->config->uartbase, SystemCoreClock, uart->config->baudrate,
uart->config->mode);
UARTIntEnable(uart->config->uartbase, UART_INT_RX);
UARTEnable(uart->config->uartbase);
UARTFIFODisable(uart->config->uartbase);
IntEnable(uart->uartintbase);
return RT_EOK;
}
static rt_err_t msp432_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct msp432_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct msp432_uart, serial);
switch (cmd)
{
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
IntDisable(uart->uartintbase);
UARTIntDisable(uart->config->uartbase, UART_INT_RX);
break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
IntEnable(uart->uartintbase);
UARTIntEnable(uart->config->uartbase, UART_INT_RX);
break;
}
return RT_EOK;
}
static int msp432_putc(struct rt_serial_device *serial, char c)
{
struct msp432_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct msp432_uart, serial);
UARTCharPut(uart->config->uartbase, c);
return 1;
}
static int msp432_getc(struct rt_serial_device *serial)
{
int ch;
struct msp432_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct msp432_uart, serial);
ch = -1;
ch = UARTCharGetNonBlocking(uart->config->uartbase);
return ch;
}
static rt_ssize_t msp432_dma_transmit(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
{
/* this is an interface for uart dma, reserved for uptate. */
return 0;
}
static const struct rt_uart_ops msp432_uart_ops =
{
.configure = msp432_configure,
.control = msp432_control,
.putc = msp432_putc,
.getc = msp432_getc,
.dma_transmit = msp432_dma_transmit
};
/**
* Uart common interrupt process. This need add to uart ISR.
*
* @param serial serial device
*/
static void uart_isr(struct rt_serial_device *serial)
{
struct msp432_uart *uart;
uint32_t ui32Ints;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct msp432_uart, serial);
ui32Ints = UARTIntStatus(uart->config->uartbase, true);
UARTIntClear(uart->config->uartbase, ui32Ints);
/* UART in mode Receiver -------------------------------------------------*/
if (ui32Ints & (UART_INT_RX | UART_INT_RT))
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
}
#if defined(BSP_USING_UART0)
void UART0_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART0_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART0 */
#if defined(BSP_USING_UART1)
void UART1_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART2)
void UART2_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART2_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#if defined(BSP_USING_UART3)
void UART3_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART3_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART3 */
int rt_hw_usart_init(void)
{
rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct msp432_uart);
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
rt_err_t result = 0;
uart_hw_config();
for (int i = 0; i < obj_num; i++)
{
uart_obj[i].config = &uart_config[i];
uart_obj[i].uartintbase = uart_intbase[i];
uart_obj[i].serial.ops = &msp432_uart_ops;
uart_obj[i].serial.config = config;
/* register UART device */
result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
RT_DEVICE_FLAG_RDWR
| RT_DEVICE_FLAG_INT_RX
| RT_DEVICE_FLAG_INT_TX
| uart_obj[i].uart_dma_flag
, NULL);
RT_ASSERT(result == RT_EOK);
}
return result;
}
#endif /* RT_USING_SERIAL */
/************************** end of file ******************/
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