xushaoxiang
441 lines
13 KiB
C
441 lines
13 KiB
C
/*!
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* \file adc.c
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*
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* \brief Target 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 "adc.h"
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#include "xc6xxx_hal_adc.h"
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#include "xc6xxx_hal_adc_dmac.h"
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/*------------------------------------------------------------------------------------
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Macros
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-------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------------
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Global Variables
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-------------------------------------------------------------------------------------*/
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uint8_t adc_ch_buff[1000];
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extern uint32_t adc_val_buff[500];
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uint16_t adc_con = 0;
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/*------------------------------------------------------------------------------------
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Functions
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-------------------------------------------------------------------------------------*/
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/**
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* @brief 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 adc_demo(void)
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{
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DEBUG("__ADC_DEMO__\r");
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DEBUG("XC_ADC->RF_CTL:%x\n", XC_ADC->RF_CTL);
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uint16_t integer;
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uint16_t decimal;
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uint16_t adc_val = 0;
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adc_cfg adc_cfg;
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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(12,1);
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// GPIO_MuxCtl(13,1);
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/*-----------------------*/
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// *((volatile unsigned *)(0x4002F000 + 0x03C)) &= ~(0x1<<14);
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adc_cfg.Freq = ADC_FREQ_2M;
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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 = ADC_EXT_EDGE_SEL_INTER;
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adc_cfg.ExtSampleNum = ADC_SAMPLE_NUM_8;
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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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while (1) {
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DEBUG("XC_ADC->RF_CTL22:%x\n", XC_ADC->RF_CTL);
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ADC_StartGetValue(XC_ADC, ADC_CHANNEL4_PIN0, &adc_val);
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if (adc_cfg.RefVol == ADC_REF_VOL_3_3V) {
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integer = ((adc_val) * 3.3 * 100) / (1.0 * 4096) / 100;
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decimal = ((uint32_t)((adc_val * 3.3 * 100) / 4096) % 100);
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DEBUG("3.3v ref adc_vol=%d.%d ,adc_val=%d\n", integer, decimal,
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adc_val);
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} else if (adc_cfg.RefVol == ADC_REFVOL_2_33V) {
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integer = ((adc_val) * 2.33 * 100) / (1.0 * 4096) / 100;
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decimal = ((uint32_t)((adc_val * 2.33 * 100) / 4096) % 100);
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DEBUG("2.33v ref adc_vol=%d.%d ,adc_val=%d\n", integer, decimal,
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adc_val);
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}
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Delay_Ms(1000);
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}
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}
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/**
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* @brief adc_channel_sw_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 adc_channelswitch_sw_demo(void)
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{
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DEBUG("ADC channelswitch sw demo\n");
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uint16_t integer;
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uint16_t decimal;
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adc_cfg adc_cfg;
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Delay_Ms(500);
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*((volatile unsigned int *)(0x400001BC)) &=
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~(1 << 12); // 防止GPIO6被接到运放，导致GADC\上拉无效问题
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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 = 20;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = 18;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = 19;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = 0;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_FunSel(3, UART0_TX); // 更换打印口
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GPIO_FunSel(2, UART0_RX);
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// *((volatile unsigned *)(0x4002F000 + 0x03C)) &= ~(0x1<<14);
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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_4;
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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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__ADC_ChannelSet(XC_ADC, ADC_CHANNEL4_PIN0);
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//==================中断设置=========================
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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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//===========================================
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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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// ADC DMA enable
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// XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_DMAS_ON_ENABLE;
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// XC_ADC->MAIN_CTL |= ADC_MAIN_CTL_DMAS_ON_ENABLE;
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// ADC_DMA_Init();
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__ADC_Enable(XC_ADC);
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uint32_t val;
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ADC_FIFO_TypeDef *fifo_val = NULL;
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while (1) {
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if (adc_con >= 500 && adc_con != 0xffff) {
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fifo_val = (ADC_FIFO_TypeDef *)&val;
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for (uint16_t i = 0; i < 500; i++) {
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val = adc_val_buff[i];
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integer = ((uint32_t)(fifo_val->value_1) * (3.3 * 100)) /
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(1.0 * 4095) / 100;
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decimal =
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((uint32_t)((fifo_val->value_1 * (3.3 * 100)) / 4095) %
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100);
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DEBUG("i_dex1: %4d ch : %d val: %d adc_vol=%d.%02dV\n", i,
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fifo_val->chanel_1, fifo_val->value_1, integer, decimal);
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integer = ((uint32_t)(fifo_val->value_2) * (3.3 * 100)) /
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(1.0 * 4095) / 100;
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decimal =
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((uint32_t)((fifo_val->value_2 * (3.3 * 100)) / 4095) %
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100);
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DEBUG("i_dex2: %4d ch : %d val: %d adc_vol=%d.%02dV\n", i,
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fifo_val->chanel_2, fifo_val->value_2, integer, decimal);
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if ((i % 2))
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DEBUG("\r\n\r\n");
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// DEBUG("i_dex: %4d ch : %d val: %d\n",i,
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// adc_ch_buff[i],adc_val_buff[i]);
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}
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adc_con = 0xffff;
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}
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}
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}
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/**
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* @brief adc_channel_sw_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 adc_channelswitch_hw_demo(void)
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{
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DEBUG("ADC channelswitch hw demo\n");
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uint16_t integer;
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uint16_t decimal;
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adc_cfg adc_cfg;
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Delay_Ms(500);
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*((volatile unsigned int *)(0x400001BC)) &=
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~(1 << 12); // 防止GPIO6被接到运放，导致GADC\上拉无效问题
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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 = 20;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = 18;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = 19;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = 0;
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GPIO_Init(&GPIO_InitCfg);
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GPIO_FunSel(3, UART0_TX); // 更换打印口
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GPIO_FunSel(2, UART0_RX);
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// *((volatile unsigned *)(0x4002F000 + 0x03C)) &= ~(0x1<<14);
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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_4;
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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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XC_ADC->TIMER1 = 62;
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XC_ADC->TIMER0 = 1;
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//=============设置需要切换的通道（1---4通道，1个bit表示一个通道）=============
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XC_ADC->CHAN_CTL &= ~ADC_CHAN_CTL_CHAN_AUTO_Msk;
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XC_ADC->CHAN_CTL |= 0xf << 8;
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// 使能ADC自动切换
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XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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XC_ADC->MAIN_CTL |=
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ADC_MAIN_CTL_AUTO_SW_ENABLE; //(ADC_MAIN_CTL_AUTO_SW_ENABLE<<ADC_MAIN_CTL_AUTO_SW_Pos);
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//==================中断设置=========================
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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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//===========================================
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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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// ADC DMA enable
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// XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_DMAS_ON_ENABLE;
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// XC_ADC->MAIN_CTL |= ADC_MAIN_CTL_DMAS_ON_ENABLE;
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// ADC_DMA_Init();
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__ADC_Enable(XC_ADC);
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uint32_t val;
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ADC_FIFO_TypeDef *fifo_val = NULL;
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while (1) {
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if (adc_con >= 500 && adc_con != 0xffff) {
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fifo_val = (ADC_FIFO_TypeDef *)&val;
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for (uint16_t i = 0; i < 500; i++) {
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val = adc_val_buff[i];
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integer = ((uint32_t)(fifo_val->value_1) * (3.3 * 100)) /
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(1.0 * 4095) / 100;
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decimal =
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((uint32_t)((fifo_val->value_1 * (3.3 * 100)) / 4095) %
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100);
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DEBUG("i_dex1: %4d ch : %d val: %d adc_vol=%d.%02dV\n", i,
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fifo_val->chanel_1, fifo_val->value_1, integer, decimal);
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integer = ((uint32_t)(fifo_val->value_2) * (3.3 * 100)) /
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(1.0 * 4095) / 100;
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decimal =
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((uint32_t)((fifo_val->value_2 * (3.3 * 100)) / 4095) %
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100);
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DEBUG("i_dex2: %4d ch : %d val: %d adc_vol=%d.%02dV\n", i,
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fifo_val->chanel_2, fifo_val->value_2, integer, decimal);
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if ((i % 2))
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DEBUG("\r\n\r\n");
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// DEBUG("i_dex: %4d ch : %d val: %d\n",i,
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// adc_ch_buff[i],adc_val_buff[i]);
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}
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adc_con = 0xffff;
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}
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}
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}
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void ADC_channelswitch_sw_Intr_Callback(void)
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{
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uint32_t adc_int;
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static uint8_t adc_start = 0;
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adc_int = XC_ADC->INT;
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if (!(adc_int & (ADC_INT_READ_REQ_INT_Msk | ADC_INT_FIFO_ERROR_INT_Msk))) {
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return;
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}
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if (adc_con >= 500) {
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//__ADC_Clear_IT_Flag(XC_ADC);
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return;
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}
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//__ADC_Disable(XC_ADC);
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__ADC_Clear_IT_Flag(XC_ADC);
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if (++adc_start > 3)
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adc_start = 0;
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switch (adc_start) {
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case 0:
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__ADC_ChannelSet(XC_ADC, ADC_CHANNEL1_PIN20);
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GPIO_Output_Low(1);
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GPIO_Output_High(1);
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break;
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case 1:
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__ADC_ChannelSet(XC_ADC, ADC_CHANNEL11_PIN2);
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// XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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break;
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case 2:
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__ADC_ChannelSet(XC_ADC, ADC_CHANNEL4_PIN0);
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// XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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break;
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case 3:
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__ADC_ChannelSet(XC_ADC, ADC_CHANNEL6_PIN4);
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// XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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break;
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// case 4:
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// __ADC_ChannelSet(XC_ADC, ADC_CHANNEL7_PIN5);
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// //XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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// break;
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//
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// case 5:
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// __ADC_ChannelSet(XC_ADC, ADC_CHANNEL2_PIN19);
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// //XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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// break;
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//
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// case 6:
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// __ADC_ChannelSet(XC_ADC, ADC_CHANNEL3_PIN18);
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// //XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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// break;
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//
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// case 7:
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// __ADC_ChannelSet(XC_ADC, ADC_CHANNEL4_PIN0);
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// //XC_ADC->MAIN_CTL &= ~ADC_MAIN_CTL_AUTO_SW_Msk;
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// break;
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}
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for (int t = 0; t < ADC_FIFO_CTL_READ_REQ_THRESH_LEN_2; t++) {
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// val = XC_ADC->FIFO;
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adc_val_buff[adc_con] = XC_ADC->FIFO;
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adc_con++;
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}
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//__ADC_Enable(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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}
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void ADC_channelswitch_hw_Intr_Callback(void)
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{
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uint32_t adc_int;
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adc_int = XC_ADC->INT;
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if (!(adc_int & (ADC_INT_READ_REQ_INT_Msk | ADC_INT_FIFO_ERROR_INT_Msk))) {
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return;
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}
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if (adc_con >= 500) {
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return;
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}
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//__ADC_Disable(XC_ADC);
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__ADC_Clear_IT_Flag(XC_ADC);
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for (int t = 0; t < ADC_FIFO_CTL_READ_REQ_THRESH_LEN_2; t++) {
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adc_val_buff[adc_con] = XC_ADC->FIFO;
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adc_con++;
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}
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}
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// void ADC_Intr_Callback(void)
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//{
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// ADC_channelswitch_hw_Intr_Callback(); //adc硬件切换
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//// ADC_channelswitch_sw_Intr_Callback();//adc软件切换
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//// PGA_ADC_Intr_Callback(); //录音pga
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//}
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