static void adc_queue_start(void) { if (adc_busy) return; crit_enter(); if (head) { adc_busy = true; adc_sample_prepare(head->mode); adc_sample_start(head->channel, adc_queue_sample_done, NULL); } crit_exit(); }
void main(void) { adc_init(); dma_init(); enter_thread_mode(); sema_wait(&adc_start_sema); struct dma_ctx *ctx; ctx = dma_setup(DMAMUX_ADC0, &ADC_R_REG(ADC0, 0), dstbuf, 2, sizeof(dstbuf)/2, DMA_SRC_STICKY | DMA_DOUBLEBUF | DMA_LOOP, dma_done, NULL); adc_sample_prepare(ADC_MODE_CONTINUOUS); bf_set_reg(ADC_SC2_REG(ADC0), ADC_SC2_DMAEN, 1); ADC_SC1_REG(ADC0, 0) = ADC_SC1_ADCH(0) | ADC_SC1_DIFF_MASK; wait(main); }