xushaoxiang
611 lines
17 KiB
C
611 lines
17 KiB
C
/*!
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* \file pga_adc.c
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*
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* \brief Target pga adc implementation
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*
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* \copyright Revised BSD License, see section \ref LICENSE.
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*
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* \code
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*
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* _ __ _ ________ _
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* | |/ /(_)___ / ____/ /_ (_)___
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* | // / __ \/ / / __ \/ / __ \
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* / |/ / / / / /___/ / / / / /_/ /
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* /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
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* /_/
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* (C) 2022-2025 XinChip
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*
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* \endcode
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*
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* \author ( XinChip ) Alex-J
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*
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* \author ( XinChip )
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*/
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/*-----------------------------------------------------------------------------------
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INCLUDE HEADE FILES
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------------------------------------------------------------------------------------*/
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#include "pga_adc.h"
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#include "adc.h"
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#include "ringbuffer.h"
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#include "xc6xxx_hal_adc.h"
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#include "xc6xxx_hal_uart.h"
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/*------------------------------------------------------------------------------------
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Macros
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-------------------------------------------------------------------------------------*/
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#define USER_NOISE_EN 0
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/*------------------------------------------------------------------------------------
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Global Variables
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-------------------------------------------------------------------------------------*/
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Mic_sampling_cb m_sampling_cb;
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extern void UART_SendByte(UART_TypeDef *UARTx, uint8_t Byte);
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extern uint8_t adc_ch_buff[1000];
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extern uint32_t adc_val_buff[500];
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extern uint16_t adc_con;
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/*------------------------------------------------------------------------------------
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Functions
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-------------------------------------------------------------------------------------*/
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/**
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****************************************************************************************
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* @brief
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*
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* @param[in]
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* @param[in]
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* @return[out]
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*
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****************************************************************************************
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*/
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void adc_uart_init(void)
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{
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// uint8_t rxbuff[26];
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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GPIO_InitStruct.Mux = GPIO_Mux0;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Int = NOT_INT;
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GPIO_InitStruct.Pin = GPIO_3;
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GPIO_InitStruct.Dir = GPIO_DIR_OUTPUT;
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GPIO_InitStruct.FunSel = UART1_TX;
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GPIO_Init(&GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_2;
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GPIO_InitStruct.Dir = GPIO_DIR_INPUT;
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GPIO_InitStruct.FunSel = UART1_RX;
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GPIO_Init(&GPIO_InitStruct);
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UART_InitTypeDef UART_InitStruct = {0};
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UART_InitStruct.Parity = UART_PARITY_DISABLE;
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UART_InitStruct.StopBits = UART_STOP_1_BITS;
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UART_InitStruct.WordLength = UART_UARTx_TCR_CLS_8BITS;
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UART_InitStruct.BaudRate = UART_BAUDRATE_1M;
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UART_InitStruct.HardwareFlowControl = UART_UARTx_MCR_AFCE_DISABLE;
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UART_Init(XC_UART1, &UART_InitStruct);
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UART_Enable_RxIT(XC_UART1);
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NVIC_EnableIRQ(UART1_IRQn);
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}
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void uart_seed_data(uint8_t data) { UART_SendByte(XC_UART1, data); }
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void uart_seed_buff(uint8_t *Data, uint16_t len)
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{
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UART_SendData(XC_UART1, Data, len);
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}
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// extern unsigned int filter_data(unsigned int data);
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// 对采样到的ADC值进行处理
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void pga_adc_rx_event_handler(uint16_t pga_adc_val)
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{
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#if USER_NOISE_EN
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static uint8_t delay_con = 0;
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static uint32_t voice_data_bk = 0;
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#endif
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static uint8_t freq_con = 0;
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short voice_data = 0;
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freq_con++;
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if (freq_con < m_sampling_cb.freq_con)
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return;
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freq_con = 0;
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#if SAMPLING_DEBUG
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if (m_sampling_cb.rx_flag)
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return;
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m_sampling_cb.pga_adc_rx_con++;
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#endif
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#if REC_TEST_EN || SAMPLING_DEBUG
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if (!m_sampling_cb.rec_len_time) {
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#if SAMPLING_DEBUG
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m_sampling_cb.rx_flag = 1;
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#endif // SAMPLING_DEBUG
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return;
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}
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#endif // REC_TEST_EN || SAMPLING_DEBUG
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// voice_data = pga_adc_val;
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// if (pga_adc_val > 50) pga_adc_val = pga_adc_val - 50;//平移
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voice_data = pga_adc_val;
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#if USER_NOISE_EN
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if (pga_adc_val > 2100 || pga_adc_val < 1900) {
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delay_con = 0;
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} else {
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delay_con++;
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if (delay_con >= 50) {
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delay_con = 50;
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pga_adc_val = (voice_data_bk + pga_adc_val) / 2;
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pga_adc_val = 1024 + pga_adc_val / 2;
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}
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}
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voice_data_bk = voice_data = pga_adc_val;
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#endif // USER_NOISE_EN
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if (voice_data > 2047) {
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voice_data = (((uint32_t)voice_data - 2047) * 0x7fff / 2048);
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voice_data &= ~0x8000;
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} else {
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voice_data = (((uint32_t)2047 - voice_data) * 0x7fff / 2048);
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voice_data = 0x7fff - voice_data;
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voice_data |= 0x8000;
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}
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m_sampling_cb.mic_adc_buff[m_sampling_cb.save_buf_index]
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[m_sampling_cb.pga_adc_rx_index] = voice_data;
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m_sampling_cb.pga_adc_rx_index++;
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if (m_sampling_cb.pga_adc_rx_index >= MIC_SAMPLING_MAX_LEN) {
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m_sampling_cb.pga_adc_rx_index = 0;
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m_sampling_cb.save_buf_index = !m_sampling_cb.save_buf_index;
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m_sampling_cb.buf_full_flag = 1;
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}
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}
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#if (USE_XIP == 1)
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/**
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* @brief mic_pga_adc_sampling_set
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* @details
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* @param void
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* @retval void
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*/
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void mic_pga_adc_sampling_set(void)
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{
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CLOCK_HighFreq_In_Typedef uclock_freq = CLOCK_HighFreq_Get();
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#if (SAMPLING_TYPE == MIC_SAMPLING_8K)
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#if (ADC_FREQ_CLOCK == ADC_CLK_DIV_2)
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 32;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 24;
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} else {
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m_sampling_cb.freq_con = 19;
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}
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#else
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//===========ADC时钟为2/4M的时候
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 32;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 21;
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} else {
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m_sampling_cb.freq_con = 15;
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}
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#endif //(ADC_FREQ_CLOCK == ADC_CLK_DIV_2)
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#else // 16k采样
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#if (ADC_FREQ_CLOCK == ADC_CLK_DIV_2)
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 18;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 12;
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} else {
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m_sampling_cb.freq_con = 9;
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}
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#elif (ADC_FREQ_CLOCK == ADC_CLK_DIV_4)
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 13;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 8;
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} else {
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m_sampling_cb.freq_con = 7;
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}
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#else
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//===========ADC时钟为2的时候
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 16;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 9;
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} else {
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m_sampling_cb.freq_con = 5;
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}
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#endif //(ADC_FREQ_CLOCK == ADC_CLK_DIV_2)
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#endif //(SAMPLING_TYPE == MIC_SAMPLING_8K)
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}
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#else
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/**
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* @brief mic_pga_adc_sampling_set
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* @details
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* @param void
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* @retval void
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*/
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void mic_pga_adc_sampling_set(void)
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{
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CLOCK_HighFreq_In_Typedef uclock_freq = CLOCK_HighFreq_Get();
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#if (SAMPLING_TYPE == MIC_SAMPLING_8K)
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 32;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 24;
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} else {
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m_sampling_cb.freq_con = 20;
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}
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//===========ADC采样率为2/4M的时候
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if (uclock_freq == CLOCK_HFCLK_IN_96M)
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// {
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// m_sampling_cb.freq_con = 32;
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// }
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// else if (uclock_freq == CLOCK_HFCLK_IN_64M)
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// {
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// m_sampling_cb.freq_con = 21;
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// }
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// else
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// {
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// m_sampling_cb.freq_con = 20;
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// }
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#else
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if (uclock_freq == CLOCK_HFCLK_IN_96M) {
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m_sampling_cb.freq_con = 16;
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} else if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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m_sampling_cb.freq_con = 12;
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} else {
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m_sampling_cb.freq_con = 10;
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}
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//===========ADC采样率为2/4M的时候
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// if (uclock_freq == CLOCK_HFCLK_IN_96M)
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// {
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// m_sampling_cb.freq_con = 16;
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// }
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// else if (uclock_freq == CLOCK_HFCLK_IN_64M)
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// {
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// m_sampling_cb.freq_con = 9;
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// }
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// else
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// {
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// m_sampling_cb.freq_con = 7;
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// }
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#endif // (SAMPLING_TYPE == MIC_SAMPLING_8K)
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}
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#endif // USE_XIP == 1
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/**
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* @brief mic_pga_adc_sampling_set
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* @details
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* @param void
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* @retval void
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*/
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uint32_t pga_adc_data_uart_byte_delay(void)
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{
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uint32_t delay = 0;
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CLOCK_HighFreq_In_Typedef uclock_freq = CLOCK_HighFreq_Get();
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#if (ADC_FREQ_CLOCK == ADC_CLK_DIV_2)
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if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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delay = 210;
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} else {
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delay = 75;
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}
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#else
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if (uclock_freq == CLOCK_HFCLK_IN_64M) {
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delay = 210;
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} else {
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delay = 86;
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}
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#endif
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return delay;
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}
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/**
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* @brief pga_init
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* @details
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* @param void
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* @retval void
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*/
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void pga_init(void)
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{
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uint32_t adc_reg = 0;
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DEBUG("audio_adc_ctrl_reg0 = %x\n",
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*((volatile unsigned int *)(0x400001BC)));
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// for(int i=0; i<0x100000; i++); //delay
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adc_reg = *((volatile unsigned int *)(0x400001BC));
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adc_reg &= ~(1 << 28);
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adc_reg |= (1 << 28); // opa第1级增益 +20DB
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adc_reg &= ~(0x0f << 24);
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adc_reg |= (0x0a << 24); // opa第2级增益 +16DB //主要修改增益处（<24-27>）
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adc_reg &= ~(0x7 << 21);
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adc_reg |= (0x7 << 21); // BIT21-23电流大小控制，最大为000，最小为111
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adc_reg &= ~(0x0F << 0); // bias寄存器 控制电流
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adc_reg &= ~(0x1 << 4); // opa pd信号
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adc_reg &= ~(1 << 12); // open pdbias
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adc_reg |= (0x1 << 5); // 差分
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adc_reg &= ~(1 << 7); // open pdbias pga第1级增益，
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*((volatile unsigned int *)(0x400001BC)) = adc_reg;
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DEBUG("after audio_adc_ctrl_reg0 = %x\n",
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*((volatile unsigned int *)(0x400001BC)));
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}
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/**
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* @brief mic_pga_adc_demo
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* @details
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* @param void
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* @retval void
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*/
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void mic_pga_adc_demo(void)
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{
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// DEBUG("__MIC_PGA_ADC_DEMO__\r");
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adc_uart_init();
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// uint16_t adc_val = 0;
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adc_cfg adc_cfg;
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GPIO_InitTypeDef GPIO_InitCfg = {0};
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GPIO_InitCfg.Mux = GPIO_Mux0;
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GPIO_InitCfg.FunSel = GPIO_Dx;
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GPIO_InitCfg.Pull = GPIO_NOPULL;
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// Board Led1 Initialization
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GPIO_InitCfg.Dir = GPIO_DIR_INPUT;
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GPIO_InitCfg.Int = NOT_INT;
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GPIO_InitCfg.Pin = 6;
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GPIO_Init(&GPIO_InitCfg);
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// GPIO_InitCfg.Pin = 8;
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// GPIO_Init(&GPIO_InitCfg);
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//
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// GPIO_InitCfg.Pin = 9;
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// GPIO_Init(&GPIO_InitCfg);
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#if SAMPLING_DEBUG || REC_TEST_EN
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TIMER_BaseInitTypeDef Timer_Init;
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Timer_Init.src_clk = TIMER_CLK_SRC_32M_DIV;
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Timer_Init.mode = TIMER_MODE_CYCLE_COUNT;
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Timer_Init.div_clk = TIMER_DIV_CLK_1MHzOr1K;
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// Timer0 Config & Start
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TIMER_Base_Init(XC_TIMER1, &Timer_Init);
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TIMER_SetUs(XC_TIMER1,
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1000000); // 测试采样到的时候改成1秒，录音测试改成5秒或者其他
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#endif
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// pga初始化
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pga_init();
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/*----- Special Pin -----*/
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/*< SWD 和 SWCK 引脚也可以作为 ADC 使用，
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注意 PIN 脚的功能重映射 >*/
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// GPIO_MuxCtl(12,GPIO_Mux1);
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// GPIO_MuxCtl(13,GPIO_Mux1);
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/*-----------------------*/
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adc_cfg.Freq = ADC_FREQ_4M;
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adc_cfg.RefVol = ADC_REF_VOL_3_3V;
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adc_cfg.SampEdge = ADC_SAMPEDGE_FALL;
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adc_cfg.ExtDataMode = ADC_DATA_MODE_32BIT;
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adc_cfg.ExtEdgeSel =
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ADC_EXT_EDGE_SEL_INTER; // ADC_EXT_EDGE_SEL_EXTERN_RISE //
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// ADC_EXT_EDGE_SEL_EXTERN_BOTH
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adc_cfg.ExtSampleNum = ADC_SAMPLE_NUM_16;
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adc_cfg.ExtTriggerSel = ADC_TRIGGER_SEL_PWM0;
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ADC_Init(XC_ADC, &adc_cfg);
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// 采样率设置
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mic_pga_adc_sampling_set(); // ADC改动跟着改动
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__ADC_ChannelSet(XC_ADC, ADC_CHANNEL13_PIN6);
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__ADC_FIFO_ReqIntLenthSet(XC_ADC);
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__ADC_FIFO_Flush(XC_ADC);
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__ADC_Clear_IT_Flag(XC_ADC);
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//=============中断=======================
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ADC_Enable_IT(XC_ADC, ADC_INT_EN_READ_REQ_EN_ENABLE |
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ADC_INT_EN_FIFO_ERROR_EN_ENABLE);
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NVIC_EnableIRQ(GADC_IRQn);
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__ADC_Enable(XC_ADC);
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#if SAMPLING_DEBUG || REC_TEST_EN
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TIMER_Start_IT(XC_TIMER1);
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m_sampling_cb.rec_len_time = 5; // 秒
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uint8_t rec_time;
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rec_time = m_sampling_cb.rec_len_time;
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#endif
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DEBUG("start adc\n");
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short voice_data = 0;
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uint16_t voice_adc_rx_index = 0;
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uint32_t uart_byte_delay = pga_adc_data_uart_byte_delay();
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while (1) {
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#if SAMPLING_DEBUG
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if (m_sampling_cb.rx_flag) {
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Delay_Ms(500);
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DEBUG("sampling: %d.%dKhz\n",
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(m_sampling_cb.pga_adc_rx_con / rec_time) / 1000,
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(m_sampling_cb.pga_adc_rx_con / rec_time) % 1000);
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}
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#endif
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// ADC_MIC_StartGetValue(XC_ADC, ADC_CHANNEL13_PIN6,&adc_val); //轮询
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if (m_sampling_cb.buf_full_flag) {
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m_sampling_cb.buf_full_flag = 0;
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voice_adc_rx_index = 0;
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while (voice_adc_rx_index < MIC_SAMPLING_MAX_LEN) {
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voice_data =
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m_sampling_cb.mic_adc_buff[!m_sampling_cb.save_buf_index]
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[voice_adc_rx_index];
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// DEBUG("%d\n",voice_data);
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uart_seed_data(voice_data & 0xff);
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for (uint16_t i = 0; i < uart_byte_delay; i++)
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; // 64M延时
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uart_seed_data((voice_data >> 8) & 0xff);
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for (uint16_t i = 0; i < uart_byte_delay; i++)
|
||
; // 64M延时
|
||
voice_adc_rx_index++;
|
||
}
|
||
// m_sampling_cb.save_buf_index = !m_sampling_cb.save_buf_index;
|
||
}
|
||
}
|
||
}
|
||
|
||
void Timer1_Callback(void *context)
|
||
{
|
||
(void)context;
|
||
#if SAMPLING_DEBUG
|
||
// m_sampling_cb.rx_flag = 1;
|
||
#endif
|
||
#if REC_TEST_EN
|
||
if (m_sampling_cb.rec_len_time) {
|
||
// DEBUG("m_sampling_cb.rec_len_time\n");
|
||
m_sampling_cb.rec_len_time--;
|
||
}
|
||
#endif
|
||
}
|
||
|
||
//=========================================PGA+ADC相关的=========================================
|
||
void ADC_MIC_StartGetValue(ADC_TypeDef *ADCx, ADC_ChannelTypeDef Channel,
|
||
uint16_t *adc_val)
|
||
{
|
||
uint32_t val;
|
||
ADC_FIFO_TypeDef *fifo_val = NULL;
|
||
|
||
if (__ADC_ChannelGet(XC_ADC) != Channel) {
|
||
__ADC_Disable(ADCx);
|
||
|
||
__ADC_ChannelSet(ADCx, Channel);
|
||
|
||
__ADC_FIFO_ReqIntLenthSet(ADCx);
|
||
|
||
__ADC_FIFO_Flush(ADCx);
|
||
|
||
__ADC_Clear_IT_Flag(ADCx);
|
||
|
||
__ADC_Enable(ADCx);
|
||
}
|
||
|
||
val = ADCx->INT_RAW;
|
||
if (((val & ADC_INT_READ_REQ_INT_Msk) != ADC_INT_READ_REQ_INT_Msk)) {
|
||
return;
|
||
}
|
||
|
||
__ADC_Clear_IT_Flag(ADCx);
|
||
|
||
fifo_val = (ADC_FIFO_TypeDef *)&val;
|
||
|
||
for (int t = 0; t < ADC_FIFO_CTL_READ_REQ_THRESH_LEN_8; t++) {
|
||
val = ADCx->FIFO;
|
||
|
||
if (fifo_val->chanel_1 != fifo_val->chanel_2) {
|
||
// DEBUG("channel error :%d\n",t);
|
||
continue;
|
||
}
|
||
|
||
if (fifo_val->chanel_1 != Channel) {
|
||
// DEBUG("channel error :%d\n",t);
|
||
continue;
|
||
}
|
||
|
||
pga_adc_rx_event_handler(fifo_val->value_1);
|
||
pga_adc_rx_event_handler(fifo_val->value_2);
|
||
}
|
||
|
||
*adc_val = fifo_val->value_1;
|
||
|
||
__ADC_FIFO_Flush(ADCx);
|
||
// __ADC_Disable(ADCx);
|
||
// __ADC_ChannelSet(ADCx, Channel);
|
||
// __ADC_Clear_IT_Flag(XC_ADC);
|
||
// __ADC_Enable(XC_ADC);
|
||
}
|
||
//=================================================================================
|
||
|
||
void PGA_ADC_Intr_Callback(void)
|
||
{
|
||
uint32_t adc_int;
|
||
uint32_t val;
|
||
|
||
ADC_FIFO_TypeDef *fifo_val = NULL;
|
||
|
||
adc_int = XC_ADC->INT;
|
||
|
||
if (!(adc_int & (ADC_INT_READ_REQ_INT_Msk | ADC_INT_FIFO_ERROR_INT_Msk))) {
|
||
return;
|
||
}
|
||
// 开关ADC会影响采样率，需要重新调整
|
||
//__ADC_Disable(XC_ADC);
|
||
fifo_val = (ADC_FIFO_TypeDef *)&val;
|
||
|
||
for (int t = 0; t < ADC_FIFO_CTL_READ_REQ_THRESH_LEN_8; t++) {
|
||
val = XC_ADC->FIFO;
|
||
|
||
if (fifo_val->chanel_1 == ADC_CHANNEL13_PIN6) {
|
||
pga_adc_rx_event_handler(fifo_val->value_1);
|
||
}
|
||
if (fifo_val->chanel_2 == ADC_CHANNEL13_PIN6) {
|
||
pga_adc_rx_event_handler(fifo_val->value_2);
|
||
}
|
||
// if (t==7)
|
||
// __ADC_Enable(XC_ADC);
|
||
}
|
||
// __ADC_Enable(XC_ADC);
|
||
__ADC_FIFO_Flush(XC_ADC);
|
||
}
|
||
|
||
void ADC_Intr_Callback(void)
|
||
{
|
||
ADC_channelswitch_hw_Intr_Callback(); // adc硬件切换
|
||
// ADC_channelswitch_sw_Intr_Callback();//adc软件切换
|
||
// PGA_ADC_Intr_Callback(); //录音pga
|
||
}
|