438 lines
9.0 KiB
C
438 lines
9.0 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2019-07-15 Magicoe The first version for LPC55S6x
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
#include "drv_uart.h"
|
|
|
|
#include "fsl_usart.h"
|
|
#include "fsl_common.h"
|
|
#include "fsl_iocon.h"
|
|
|
|
#ifdef RT_USING_SERIAL
|
|
|
|
#if defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL
|
|
#error "Please don't define 'FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL'!"
|
|
#endif
|
|
|
|
#if !defined(BSP_USING_UART0) && \
|
|
!defined(BSP_USING_UART1) && \
|
|
!defined(BSP_USING_UART2) && \
|
|
!defined(BSP_USING_UART3) && \
|
|
!defined(BSP_USING_UART4) && \
|
|
!defined(BSP_USING_UART5) && \
|
|
!defined(BSP_USING_UART6) && \
|
|
!defined(BSP_USING_UART7)
|
|
#error "Please define at least one UARTx"
|
|
#endif
|
|
|
|
#include <rtdevice.h>
|
|
|
|
/* lpc uart driver */
|
|
struct lpc_uart
|
|
{
|
|
USART_Type *uart_base;
|
|
IRQn_Type irqn;
|
|
clock_name_t clock_src;
|
|
|
|
struct rt_serial_device *serial;
|
|
char *device_name;
|
|
};
|
|
|
|
static void uart_isr(struct rt_serial_device *serial);
|
|
|
|
#if defined(BSP_USING_UART0)
|
|
struct rt_serial_device serial0;
|
|
|
|
void FLEXCOMM0_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial0);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART1 */
|
|
|
|
#if defined(BSP_USING_UART1)
|
|
struct rt_serial_device serial1;
|
|
|
|
void FLEXCOMM1_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial1);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART1 */
|
|
|
|
#if defined(BSP_USING_UART2)
|
|
struct rt_serial_device serial2;
|
|
|
|
void FLEXCOMM2_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial2);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART2 */
|
|
|
|
#if defined(BSP_USING_UART3)
|
|
struct rt_serial_device serial3;
|
|
|
|
void FLEXCOMM3_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial3);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART3 */
|
|
|
|
#if defined(BSP_USING_UART4)
|
|
struct rt_serial_device serial4;
|
|
|
|
void FLEXCOMM4_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial4);
|
|
}
|
|
#endif /* BSP_USING_UART4 */
|
|
|
|
#if defined(BSP_USING_UART5)
|
|
struct rt_serial_device serial5;
|
|
|
|
void FLEXCOMM5_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial5);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART5 */
|
|
|
|
#if defined(BSP_USING_UART6)
|
|
struct rt_serial_device serial6;
|
|
|
|
void FLEXCOMM6_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial6);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART6 */
|
|
|
|
#if defined(BSP_USING_UART7)
|
|
struct rt_serial_device serial7;
|
|
|
|
void FLEXCOMM7_IRQHandler(void)
|
|
{
|
|
uart_isr(&serial7);
|
|
}
|
|
|
|
#endif /* BSP_USING_UART7 */
|
|
|
|
static const struct lpc_uart uarts[] =
|
|
{
|
|
#ifdef BSP_USING_UART0
|
|
{
|
|
USART0,
|
|
FLEXCOMM0_IRQn,
|
|
kCLOCK_Flexcomm0,
|
|
|
|
&serial0,
|
|
"uart0",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART1
|
|
{
|
|
USART1,
|
|
FLEXCOMM1_IRQn,
|
|
kCLOCK_Flexcomm1,
|
|
|
|
&serial1,
|
|
"uart1",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART2
|
|
{
|
|
USART2,
|
|
FLEXCOMM2_IRQn,
|
|
kCLOCK_Flexcomm2,
|
|
|
|
&serial2,
|
|
"uart2",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART3
|
|
{
|
|
USART3,
|
|
FLEXCOMM3_IRQn,
|
|
kCLOCK_Flexcomm3,
|
|
|
|
&serial3,
|
|
"uart3",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART4
|
|
{
|
|
USART4,
|
|
FLEXCOMM4_IRQn,
|
|
kCLOCK_Flexcomm4,
|
|
|
|
&serial4,
|
|
"uart4",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART5
|
|
{
|
|
USART5,
|
|
FLEXCOMM5_IRQn,
|
|
kCLOCK_Flexcomm5,
|
|
|
|
&serial5,
|
|
"uart5",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART6
|
|
{
|
|
USART6,
|
|
FLEXCOMM6_IRQn,
|
|
kCLOCK_Flexcomm6,
|
|
|
|
&serial6,
|
|
"uart6",
|
|
},
|
|
#endif
|
|
#ifdef BSP_USING_UART7
|
|
{
|
|
USART7,
|
|
FLEXCOMM7_IRQn,
|
|
kCLOCK_Flexcomm7,
|
|
|
|
&serial7,
|
|
"uart7",
|
|
},
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* @brief UART MSP Initialization
|
|
* This function configures the hardware resources used in this example:
|
|
* - Peripheral's clock enable
|
|
* - Peripheral's GPIO Configuration
|
|
* - NVIC configuration for UART interrupt request enable
|
|
* @param huart: UART handle pointer
|
|
* @retval None
|
|
*/
|
|
void lpc_uart_gpio_init(struct lpc_uart *uart)
|
|
{
|
|
if (uart->uart_base != RT_NULL)
|
|
{
|
|
#ifdef BSP_USING_UART0
|
|
/* attach 12 MHz clock to FLEXCOMM0 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM0);
|
|
#endif
|
|
#ifdef BSP_USING_UART1
|
|
/* attach 12 MHz clock to FLEXCOMM1 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM1);
|
|
#endif
|
|
#ifdef BSP_USING_UART2
|
|
/* attach 12 MHz clock to FLEXCOMM2 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM2);
|
|
#endif
|
|
#ifdef BSP_USING_UART3
|
|
/* attach 12 MHz clock to FLEXCOMM3 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM3);
|
|
#endif
|
|
#ifdef BSP_USING_UART4
|
|
/* attach 12 MHz clock to FLEXCOMM4 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM4);
|
|
#endif
|
|
#ifdef BSP_USING_UART5
|
|
/* attach 12 MHz clock to FLEXCOMM5 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM5);
|
|
#endif
|
|
#ifdef BSP_USING_UART6
|
|
/* attach 12 MHz clock to FLEXCOMM6 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM6);
|
|
#endif
|
|
#ifdef BSP_USING_UART7
|
|
/* attach 12 MHz clock to FLEXCOMM7 (debug console) */
|
|
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM7);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
RT_ASSERT(RT_NULL);
|
|
}
|
|
}
|
|
|
|
|
|
static rt_err_t lpc_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
|
|
{
|
|
struct lpc_uart *uart;
|
|
usart_config_t config;
|
|
|
|
RT_ASSERT(serial != RT_NULL);
|
|
RT_ASSERT(cfg != RT_NULL);
|
|
|
|
uart = (struct lpc_uart *)serial->parent.user_data;
|
|
|
|
lpc_uart_gpio_init(uart);
|
|
|
|
/*
|
|
* config.baudRate_Bps = 115200U;
|
|
* config.parityMode = kUSART_ParityDisabled;
|
|
* config.stopBitCount = kUSART_OneStopBit;
|
|
* config.loopback = false;
|
|
* config.enableTx = false;
|
|
* config.enableRx = false;
|
|
*/
|
|
USART_GetDefaultConfig(&config);
|
|
config.baudRate_Bps = cfg->baud_rate;
|
|
|
|
switch (cfg->data_bits)
|
|
{
|
|
case DATA_BITS_7:
|
|
config.bitCountPerChar = kUSART_7BitsPerChar;
|
|
break;
|
|
|
|
default:
|
|
config.bitCountPerChar = kUSART_8BitsPerChar;
|
|
break;
|
|
}
|
|
|
|
switch (cfg->stop_bits)
|
|
{
|
|
case STOP_BITS_2:
|
|
config.stopBitCount = kUSART_TwoStopBit;
|
|
break;
|
|
default:
|
|
config.stopBitCount = kUSART_OneStopBit;
|
|
break;
|
|
}
|
|
|
|
switch (cfg->parity)
|
|
{
|
|
case PARITY_ODD:
|
|
config.parityMode = kUSART_ParityOdd;
|
|
break;
|
|
case PARITY_EVEN:
|
|
config.parityMode = kUSART_ParityEven;
|
|
break;
|
|
default:
|
|
config.parityMode = kUSART_ParityDisabled;
|
|
break;
|
|
}
|
|
|
|
config.enableTx = true;
|
|
config.enableRx = true;
|
|
|
|
USART_Init(uart->uart_base, &config, CLOCK_GetFreq(uart->clock_src));
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t lpc_control(struct rt_serial_device *serial, int cmd, void *arg)
|
|
{
|
|
struct lpc_uart *uart;
|
|
|
|
RT_ASSERT(serial != RT_NULL);
|
|
uart = (struct lpc_uart *)serial->parent.user_data;
|
|
|
|
switch (cmd)
|
|
{
|
|
case RT_DEVICE_CTRL_CLR_INT:
|
|
/* disable rx irq */
|
|
USART_DisableInterrupts(uart->uart_base, kUSART_RxLevelInterruptEnable);
|
|
DisableIRQ(uart->irqn);
|
|
break;
|
|
case RT_DEVICE_CTRL_SET_INT:
|
|
/* enable rx irq */
|
|
USART_EnableInterrupts(uart->uart_base, kUSART_RxLevelInterruptEnable);
|
|
EnableIRQ(uart->irqn);
|
|
break;
|
|
}
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static int lpc_putc(struct rt_serial_device *serial, char ch)
|
|
{
|
|
struct lpc_uart *uart;
|
|
|
|
uart = (struct lpc_uart *)serial->parent.user_data;
|
|
|
|
while (!(kUSART_TxFifoNotFullFlag & USART_GetStatusFlags(uart->uart_base)));
|
|
|
|
USART_WriteByte(uart->uart_base, ch);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int lpc_getc(struct rt_serial_device *serial)
|
|
{
|
|
struct lpc_uart *uart;
|
|
|
|
uart = (struct lpc_uart *)serial->parent.user_data;
|
|
if (kUSART_RxFifoNotEmptyFlag & USART_GetStatusFlags(uart->uart_base))
|
|
{
|
|
return USART_ReadByte(uart->uart_base);
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Uart common interrupt process. This need add to uart ISR.
|
|
*
|
|
* @param serial serial device
|
|
*/
|
|
static void uart_isr(struct rt_serial_device *serial)
|
|
{
|
|
struct lpc_uart *uart;
|
|
|
|
RT_ASSERT(serial != RT_NULL);
|
|
|
|
uart = (struct lpc_uart *) serial->parent.user_data;
|
|
RT_ASSERT(uart != RT_NULL);
|
|
|
|
/* enter interrupt */
|
|
rt_interrupt_enter();
|
|
|
|
/* UART in mode Receiver -------------------------------------------------*/
|
|
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
|
|
|
|
/* leave interrupt */
|
|
rt_interrupt_leave();
|
|
}
|
|
|
|
static const struct rt_uart_ops lpc_uart_ops =
|
|
{
|
|
lpc_configure,
|
|
lpc_control,
|
|
lpc_putc,
|
|
lpc_getc,
|
|
};
|
|
|
|
int rt_hw_uart_init(void)
|
|
{
|
|
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
|
|
int i;
|
|
|
|
for (i = 0; i < sizeof(uarts) / sizeof(uarts[0]); i++)
|
|
{
|
|
uarts[i].serial->ops = &lpc_uart_ops;
|
|
uarts[i].serial->config = config;
|
|
|
|
/* register UART device */
|
|
rt_hw_serial_register(uarts[i].serial,
|
|
uarts[i].device_name,
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
(void *)&uarts[i]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
INIT_BOARD_EXPORT(rt_hw_uart_init);
|
|
|
|
#endif /*BSP_USING_SERIAL */
|