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