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/**
*********************************************************************************************************
* Copyright(c) 2018, Realtek Semiconductor Corporation. All rights reserved.
**********************************************************************************************************
* @file io_uart.c
* @brief uart interrupt demo
* @details
* @author yuan
* @date 2018-06-28
* @version v0.1
*********************************************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "io_cap_touch.h"
#include <string.h>
#include "app_task.h"
#include "trace.h"
/* Globals ------------------------------------------------------------------*/
uint8_t UART_RX_Buffer[256];
uint8_t UART_RX_Count = 0;
bool IO_UART_DLPS_Enter_Allowed = false;
bool IO_CAP_TOUCH_DLPS_Enter_Allowed = false;
/**
* @brief Initialize uart global data.
* @param No parameter.
* @return void
*/
void global_data_uart_init(void)
{
IO_UART_DLPS_Enter_Allowed = true;
UART_RX_Count = 0;
memset(UART_RX_Buffer, 0, sizeof(UART_RX_Buffer));
}
/**
* @brief Initialize uart global data.
* @param No parameter.
* @return void
*/
void global_data_cap_touch_init(void)
{
IO_CAP_TOUCH_DLPS_Enter_Allowed = true;
}
/**
* @brief Initialization of pinmux settings and pad settings.
* @param No parameter.
* @return void
*/
void board_uart_init(void)
{
Pad_Config(UART_TX_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_DISABLE, PAD_OUT_HIGH);
Pad_Config(UART_RX_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_DISABLE, PAD_OUT_HIGH);
Pinmux_Config(UART_TX_PIN, UART0_TX);
Pinmux_Config(UART_RX_PIN, UART0_RX);
}
/**
* @brief Initialize uart peripheral.
* @param No parameter.
* @return void
*/
void driver_uart_init(void)
{
RCC_PeriphClockCmd(APBPeriph_UART0, APBPeriph_UART0_CLOCK, ENABLE);
/* uart init */
UART_InitTypeDef UART_InitStruct;
UART_StructInit(&UART_InitStruct);
UART_Init(UART0, &UART_InitStruct);
//enable rx interrupt and line status interrupt
UART_INTConfig(UART0, UART_INT_RD_AVA, ENABLE);
UART_INTConfig(UART0, UART_INT_RX_IDLE, ENABLE);
/* Enable UART IRQ */
NVIC_InitTypeDef NVIC_InitStruct;
NVIC_InitStruct.NVIC_IRQChannel = UART0_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd = (FunctionalState)ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
NVIC_Init(&NVIC_InitStruct);
}
/**
* @brief IO enter dlps call back function.
* @param No parameter.
* @return void
*/
void io_uart_dlps_enter(void)
{
/* Switch pad to Software mode */
Pad_ControlSelectValue(UART_TX_PIN, PAD_SW_MODE);
Pad_ControlSelectValue(UART_RX_PIN, PAD_SW_MODE);
System_WakeUpPinEnable(UART_RX_PIN, PAD_WAKEUP_POL_LOW, 0);
}
/**
* @brief IO exit dlps call back function.
* @param No parameter.
* @return void
*/
void io_uart_dlps_exit(void)
{
/* Switch pad to Pinmux mode */
Pad_ControlSelectValue(UART_TX_PIN, PAD_PINMUX_MODE);
Pad_ControlSelectValue(UART_RX_PIN, PAD_PINMUX_MODE);
}
/**
* @brief IO enter dlps check function.
* @param No parameter.
* @return void
*/
bool io_uart_dlps_check(void)
{
return IO_UART_DLPS_Enter_Allowed;
}
/**
* @brief UARt send data continuous.
* @param No parameter.
* @return void
*/
void uart_senddata_continuous(UART_TypeDef *UARTx, const uint8_t *pSend_Buf, uint16_t vCount)
{
uint8_t count;
while (vCount / UART_TX_FIFO_SIZE > 0)
{
while (UART_GetFlagStatus(UARTx, UART_FLAG_TX_FIFO_EMPTY) == 0);
for (count = UART_TX_FIFO_SIZE; count > 0; count--)
{
UARTx->RB_THR = *pSend_Buf++;
}
vCount -= UART_TX_FIFO_SIZE;
}
while (UART_GetFlagStatus(UARTx, UART_FLAG_TX_FIFO_EMPTY) == 0);
while (vCount--)
{
UARTx->RB_THR = *pSend_Buf++;
}
}
/**
* @brief Handle uart data function.
* @param No parameter.
* @return void
*/
void io_uart_handle_msg(T_IO_MSG *io_uart_msg)
{
// uint8_t *p_buf = io_uart_msg.u.buf;
uint16_t subtype = io_uart_msg->subtype;
if (IO_MSG_UART_RX == subtype)
{
uart_senddata_continuous(UART0, UART_RX_Buffer, UART_RX_Count);
global_data_uart_init();
while (UART_GetFlagStatus(UART0, UART_FLAG_TX_FIFO_EMPTY) == 0) { IO_UART_DLPS_Enter_Allowed = true; }
}
}
/**
* @brief Handle uart msg function.
* @param No parameter.
* @return void
*/
void io_handle_uart_msg(T_IO_MSG *io_uart_msg)
{
io_uart_handle_msg(io_uart_msg);
}
void UART0_Handler()
{
uint16_t rx_len = 0;
/* Read interrupt id */
uint32_t int_status = UART_GetIID(UART0);
/* Disable interrupt */
UART_INTConfig(UART0, UART_INT_RD_AVA | UART_INT_RX_LINE_STS, DISABLE);
if (UART_GetFlagStatus(UART0, UART_FLAG_RX_IDLE) == SET)
{
/* Clear flag */
UART_INTConfig(UART0, UART_INT_RX_IDLE, DISABLE);
/* Send msg to app task */
T_IO_MSG int_uart_msg;
int_uart_msg.type = IO_MSG_TYPE_UART;
int_uart_msg.subtype = IO_MSG_UART_RX;
UART_RX_Buffer[UART_RX_Count] = UART_RX_Count;
int_uart_msg.u.buf = (void *)(&UART_RX_Buffer);
if (false == app_send_msg_to_apptask(&int_uart_msg))
{
APP_PRINT_ERROR0("[io_uart] UART0_Handler: Send int_uart_msg failed!");
//Add user code here!
return;
}
// IO_UART_DLPS_Enter_Allowed = true;
UART_ClearRxFIFO(UART0);
UART_INTConfig(UART0, UART_INT_RX_IDLE, ENABLE);
}
switch (int_status & 0x0E)
{
/* Rx time out(0x0C). */
case UART_INT_ID_RX_DATA_TIMEOUT:
rx_len = UART_GetRxFIFODataLen(UART0);
UART_ReceiveData(UART0, &UART_RX_Buffer[UART_RX_Count], rx_len);
UART_RX_Count += rx_len;
break;
/* Receive line status interrupt(0x06). */
case UART_INT_ID_LINE_STATUS:
break;
/* Rx data valiable(0x04). */
case UART_INT_ID_RX_LEVEL_REACH:
rx_len = UART_GetRxFIFODataLen(UART0);
UART_ReceiveData(UART0, &UART_RX_Buffer[UART_RX_Count], rx_len);
UART_RX_Count += rx_len;
break;
/* Tx fifo empty(0x02), not enable. */
case UART_INT_ID_TX_EMPTY:
/* Do nothing */
break;
default:
break;
}
/* enable interrupt again */
UART_INTConfig(UART0, UART_INT_RD_AVA, ENABLE);
}
/******************* (C) COPYRIGHT 2018 Realtek Semiconductor Corporation *****END OF FILE****/
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