106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
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/**
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* @file main.c
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* @brief
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*
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* Copyright (c) 2021 Bouffalolab team
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "bflb_platform.h"
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#include "hal_adc.h"
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#include "hal_dma.h"
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adc_channel_t posChList[] = { ADC_CHANNEL4 };
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adc_channel_t negChList[] = { ADC_CHANNEL_GND };
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adc_channel_val_t result_val[16];
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struct device *adc_test;
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uint32_t adc_buffer[16];
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adc_data_parse_t data_parse;
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void dma_ch0_irq_callback(struct device *dev, void *args, uint32_t size, uint32_t state)
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{
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device_control(adc_test, DEVICE_CTRL_ADC_DATA_PARSE, (void*)&data_parse);
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for (uint8_t i = 0; i < 16; i++) {
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MSG("PosId = %d NegId = %d V= %d mV \r\n", result_val[i].posChan, result_val[i].negChan, (uint32_t)(result_val[i].volt * 1000));
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}
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}
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int main(void)
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{
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bflb_platform_init(0);
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adc_channel_cfg_t adc_channel_cfg;
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adc_channel_cfg.pos_channel = posChList;
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adc_channel_cfg.neg_channel = negChList;
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adc_channel_cfg.num = 1;
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adc_register(ADC0_INDEX, "adc");
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adc_test = device_find("adc");
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if (adc_test) {
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ADC_DEV(adc_test)->continuous_conv_mode = ENABLE;
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ADC_DEV(adc_test)->fifo_threshold = ADC_FIFO_THRESHOLD_16BYTE;
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device_open(adc_test, DEVICE_OFLAG_DMA_RX);
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if (device_control(adc_test, DEVICE_CTRL_ADC_CHANNEL_CONFIG, &adc_channel_cfg) == ERROR) {
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MSG("ADC channel config error , Please check the channel corresponding to IO is initial success by board system or Channel is invaild \r\n");
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BL_CASE_FAIL;
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while (1)
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;
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}
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MSG("adc device find success\r\n");
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}
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dma_register(DMA0_CH0_INDEX, "dma_ch0");
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struct device *dma_ch0 = device_find("dma_ch0");
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if (dma_ch0) {
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DMA_DEV(dma_ch0)->direction = DMA_PERIPH_TO_MEMORY;
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DMA_DEV(dma_ch0)->transfer_mode = DMA_LLI_ONCE_MODE;
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DMA_DEV(dma_ch0)->src_req = DMA_REQUEST_ADC0;
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DMA_DEV(dma_ch0)->dst_req = DMA_REQUEST_NONE;
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DMA_DEV(dma_ch0)->src_addr_inc = DMA_ADDR_INCREMENT_DISABLE;
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DMA_DEV(dma_ch0)->dst_addr_inc = DMA_ADDR_INCREMENT_ENABLE;
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DMA_DEV(dma_ch0)->src_burst_size = DMA_BURST_1BYTE;
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DMA_DEV(dma_ch0)->dst_burst_size = DMA_BURST_1BYTE;
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DMA_DEV(dma_ch0)->src_width = DMA_TRANSFER_WIDTH_32BIT;
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DMA_DEV(dma_ch0)->dst_width = DMA_TRANSFER_WIDTH_32BIT;
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device_open(dma_ch0, 0);
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device_set_callback(dma_ch0, dma_ch0_irq_callback);
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device_control(dma_ch0, DEVICE_CTRL_SET_INT, NULL);
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}
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/* connect dac device and dma device */
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device_control(adc_test, DEVICE_CTRL_ATTACH_RX_DMA, dma_ch0);
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data_parse.input = adc_buffer;
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data_parse.output = result_val;
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data_parse.num = 16;
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adc_channel_start(adc_test);
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while (1) {
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if (!dma_channel_check_busy(dma_ch0)) {
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device_read(adc_test, 0, adc_buffer, sizeof(adc_buffer) / sizeof(uint8_t));/* size need convert to uint8_t*/
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}
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bflb_platform_delay_ms(500);
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}
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}
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