diff options
Diffstat (limited to 'src/sample/io_sample/IR/Learn/trans/ir_driver_rx.c')
| -rw-r--r-- | src/sample/io_sample/IR/Learn/trans/ir_driver_rx.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/sample/io_sample/IR/Learn/trans/ir_driver_rx.c b/src/sample/io_sample/IR/Learn/trans/ir_driver_rx.c new file mode 100644 index 0000000..0c13a65 --- /dev/null +++ b/src/sample/io_sample/IR/Learn/trans/ir_driver_rx.c @@ -0,0 +1,166 @@ +/** +********************************************************************************************************* +* Copyright(c) 2018, Realtek Semiconductor Corporation. All rights reserved. +********************************************************************************************************* +* @file ir_driver_rx.c +* @brief This file provides demo code of ir. +* @details +* @author yuan +* @date 2018-12-07 +* @version v1.0 +********************************************************************************************************* +*/ + +/* Includes ------------------------------------------------------------------*/ +#include "ir_driver_rx.h" + +#include "ir_rx_loop_queue.h" + +#if (IR_FUN_EN && IR_FUN_LEARN_EN) + +/* Globals ------------------------------------------------------------------*/ +/* Function pointer used to send event to application from IR learn interrupt handler. */ +pFn_IR_RX_Handler_CB_t pFn_IR_RX_Handler_CB = NULL; + +/** + * @brief Initialization of pinmux settings and pad settings. + * @param No parameter. + * @return void + */ +void board_ir_rx_init(void) +{ + Pad_Config(IR_RX_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_DISABLE, PAD_OUT_LOW); + + Pinmux_Config(IR_RX_PIN, IRDA_RX); +} + + +/** + * @brief Initialize ir peripheral. + * @param No parameter. + * @return void + */ +void driver_ir_rx_init(void) +{ + /* Enable IR clock */ + RCC_PeriphClockCmd(APBPeriph_IR, APBPeriph_IR_CLOCK, DISABLE); + RCC_PeriphClockCmd(APBPeriph_IR, APBPeriph_IR_CLOCK, ENABLE); + + /* Initialize IR */ + IR_InitTypeDef IR_InitStruct; + IR_StructInit(&IR_InitStruct); + /* IR carrier freqency is 38KHz */ + IR_InitStruct.IR_Freq = IR_LEARN_FREQ; + /* Duty ratio = 1/IR_DutyCycle */ + IR_InitStruct.IR_DutyCycle = 2; + /* IR receiveing mode */ + IR_InitStruct.IR_Mode = IR_MODE_RX; + IR_InitStruct.IR_RxStartMode = IR_RX_AUTO_MODE; + /* Configure RX FIFO threshold level to trigger IR_INT_RF_LEVEL interrupt */ + IR_InitStruct.IR_RxFIFOThrLevel = IR_RX_FIFO_THR_LEVEL; + /* Discard the latest received dta if RX FIFO is full */ + IR_InitStruct.IR_RxFIFOFullCtrl = IR_RX_FIFO_FULL_DISCARD_NEWEST; + /* Configure trigger type */ + IR_InitStruct.IR_RxTriggerMode = IR_RX_FALL_EDGE; + /* If high to low or low to high transition time <= 50ns,Filter out it. */ + IR_InitStruct.IR_RxFilterTime = IR_RX_FILTER_TIME_200ns; + /* IR_RX_Count_Low_Level is counting low level */ + IR_InitStruct.IR_RxCntThrType = IR_RX_Count_High_Level; + /* Configure RX counter threshold.You can use it to decide to stop receiving IR data */ + IR_InitStruct.IR_RxCntThr = IR_LEARN_NO_WAVEFORM_TIME_MAX; + IR_Init(&IR_InitStruct); + + IR_Cmd(IR_MODE_RX, ENABLE); + IR_ClearRxFIFO(); + + IR_INTConfig(IR_INT_RF_LEVEL | IR_INT_RX_CNT_THR, ENABLE); + IR_MaskINTConfig(IR_INT_RF_LEVEL | IR_INT_RX_CNT_THR, DISABLE); + + /* Configure NVIC */ + NVIC_InitTypeDef NVIC_InitStruct; + NVIC_InitStruct.NVIC_IRQChannel = IR_IRQn; + NVIC_InitStruct.NVIC_IRQChannelPriority = 2; + NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStruct); +} + +/** + * @brief Enables or disables the specified interrupt. + * @param NewState: new state of the specified interrupt. + * This parameter can be: ENABLE or DISABLE. + * @retval None. + */ +void int_ir_rx_config(FunctionalState state) +{ + if (state != DISABLE) + { + /* Enable interrupt */ + IR_INTConfig(IR_INT_RF_LEVEL | IR_INT_RX_CNT_THR, ENABLE); + } + else + { + /* Disable interrupt */ + IR_INTConfig(IR_INT_RF_LEVEL | IR_INT_RX_CNT_THR, DISABLE); + } +} + +/** + * @brief Register callback function to send events from IR learn interrupt handle to application layer. + * @param pFunc: callback function. + * @return void + */ +void ir_rx_handler_cb(pFn_IR_RX_Handler_CB_t pFunc) +{ + pFn_IR_RX_Handler_CB = pFunc; +} + +/** + * @brief IR interrupt handler function. + * @param No parameter. + * @return void + */ +void IR_RX_Handler(void) +{ + uint16_t data_len = 0; + uint8_t ir_learn_end_flag = false; + ITStatus int_status_rfl = IR_GetINTStatus(IR_INT_RF_LEVEL); + ITStatus int_status_rxcnt = IR_GetINTStatus(IR_INT_RX_CNT_THR); + + /* Mask IR all interrupt */ + IR_MaskINTConfig(IR_INT_RF_LEVEL | IR_INT_RX_CNT_THR, ENABLE); + + /* Received interrupt */ + if (int_status_rfl == SET) + { + data_len = IR_GetRxDataLen(); + ir_loop_queue_data_in(&IR_RX_Queue, data_len); + IR_ClearINTPendingBit(IR_INT_RF_LEVEL_CLR); + } + + /* Stop to receive IR data */ + if (int_status_rxcnt == SET) + { + /* Read remaining data */ + data_len = IR_GetRxDataLen(); + ir_loop_queue_data_in(&IR_RX_Queue, data_len); + IR_ClearINTPendingBit(IR_INT_RX_CNT_THR_CLR); + + /* Send ir learn end signal. */ + //Add application code here + ir_learn_end_flag = true; + } + + if (pFn_IR_RX_Handler_CB) + { + pFn_IR_RX_Handler_CB(ir_learn_end_flag); + } + + /* Unmask IR all interrupt */ + IR_MaskINTConfig(IR_INT_RF_LEVEL | IR_INT_RX_CNT_THR, DISABLE); + +} + +#endif + +/******************* (C) COPYRIGHT 2019 Realtek Semiconductor Corporation *****END OF FILE****/ + |