xushaoxiang
188 lines
5.6 KiB
C
188 lines
5.6 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 "xc_drv_adc.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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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_channel_hw_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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uint32_t val;
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uint16_t integer;
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uint16_t decimal;
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ADC_InitCfg_t adc_cfg;
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ADC_FIFO_TypeDef_t *fifo_val = NULL;
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uint8_t timer0_cnt;
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uint16_t timer1_cnt;
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delay_ms(500);
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// Prevent GPIO6 from being connected to the op amp,
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// causing GADC\pull-up invalidation problem
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cpr_opa_ctrl_reg__pdbias__setf(DISABLE);
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GPIO_InitCfg_t 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 = GPIO_20;
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xc_gpio_init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = GPIO_18;
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xc_gpio_init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = GPIO_19;
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xc_gpio_init(&GPIO_InitCfg);
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GPIO_InitCfg.Pin = GPIO_0;
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xc_gpio_init(&GPIO_InitCfg);
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xc_gpio_fun_sel(GPIO_3, UART0_TX); // 更换打印口
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xc_gpio_fun_sel(GPIO_2, UART0_RX);
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adc_cfg.Freq = ADC_FREQ_8M;
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adc_cfg.RefVol = ADC_REF_VOL_3_3V;
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adc_cfg.SampEdge = ADC_SAMPEDGE_RISE;
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adc_cfg.ExtDataMode = ADC_EXT_DATA_MODE_32BIT;
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adc_cfg.ExtEdgeSel = ADC_EXT_EDGE_SEL_INTER;
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adc_cfg.ExtSampleNum = ADC_EXT_SAMPLE_NUM_4;
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adc_cfg.ExtTriggerSel = ADC_EXT_TRIGGER_SEL_PWM0;
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xc_adc_init(&adc_cfg);
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timer1_cnt = 31;
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timer0_cnt = 1;
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xc_adc_wait_time_set(timer0_cnt, timer1_cnt);
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(*(volatile uint32_t *)(0x40018000)) &= ~((uint32_t)0xf<<16);
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(*(volatile uint32_t *)(0x40018000)) |= ((uint32_t)0x3<<16);
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(*(volatile uint32_t *)(0x40018000)) |= ((uint32_t)0xf<<20);
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(*(volatile uint32_t *)(0x40018028)) = 0x12340000;
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(*(volatile uint32_t *)(0x4001802C)) = 0x00000000;
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xc_adc_ch_auto_set(ADC_CHAN_CTL_CHAN_1_SET | ADC_CHAN_CTL_CHAN_2_SET |
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ADC_CHAN_CTL_CHAN_3_SET | ADC_CHAN_CTL_CHAN_4_SET);
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xc_adc_ch_auto_enable();
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xc_adc_enable_it(ADC_INT_READ_REQ_INT_SET |ADC_INT_FIFO_ERROR_INT_SET );
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NVIC_EnableIRQ(GADC_IRQn);
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xc_adc_fifo_req_len_set(ADC_FIFO_CTL_READ_REQ_THRESH_LEN_8);
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xc_adc_fifo_flush();
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xc_adc_it_set(adc_int_get());
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xc_adc_enable();
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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_t *)&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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}
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adc_con = 0xffff;
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}
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}
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}
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__RAM_CODE 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_it_get();
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if (!(adc_int & (ADC_INT_FIFO_ERROR_INT_SET | ADC_INT_READ_REQ_INT_SET))) {
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return;
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}
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if (adc_con >= 500) {
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xc_adc_it_set(xc_adc_it_get());
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return;
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}
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xc_adc_it_set(xc_adc_it_get());
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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_data_get();
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adc_con++;
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}
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}
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__RAM_CODE void adc_intr_callback(void)
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{
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ADC_channelswitch_hw_Intr_Callback();
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}
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