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Diffstat (limited to 'code/esp32/components/eos/cell_pcm.c')
-rw-r--r--code/esp32/components/eos/cell_pcm.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/code/esp32/components/eos/cell_pcm.c b/code/esp32/components/eos/cell_pcm.c
deleted file mode 100644
index 5c59643..0000000
--- a/code/esp32/components/eos/cell_pcm.c
+++ /dev/null
@@ -1,258 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-
-#include <freertos/FreeRTOS.h>
-#include <freertos/semphr.h>
-#include <freertos/task.h>
-#include <freertos/queue.h>
-#include <driver/i2s.h>
-#include <driver/gpio.h>
-#include <esp_log.h>
-
-#include "eos.h"
-#include "net.h"
-#include "msgq.h"
-#include "cell.h"
-
-#define PCM_MIC_WM 128
-#define PCM_HOLD_CNT_TX 3
-#define PCM_HOLD_CNT_RX 3
-#define PCM_SIZE_BUFQ 4
-#define PCM_SIZE_BUF (PCM_MIC_WM * 4)
-
-#define PCM_GPIO_BCK 33
-#define PCM_GPIO_WS 4
-#define PCM_GPIO_DIN 34
-#define PCM_GPIO_DOUT 2
-
-#define PCM_ETYPE_WRITE 1
-
-static EOSBufQ pcm_buf_q;
-static unsigned char *pcm_bufq_array[PCM_SIZE_BUFQ];
-
-static EOSMsgQ pcm_evt_q;
-static EOSMsgItem pcm_evtq_array[PCM_SIZE_BUFQ];
-static char pcm_hold_tx;
-
-static i2s_dev_t* I2S[I2S_NUM_MAX] = {&I2S0, &I2S1};
-
-static QueueHandle_t i2s_queue;
-static SemaphoreHandle_t mutex;
-
-static const char *TAG = "EOS PCM";
-
-static void i2s_event_task(void *pvParameters) {
- i2s_event_t event;
- unsigned char *buf;
- unsigned char _type;
- size_t bytes_w;
- ssize_t bytes_r;
- uint16_t bytes_e;
- ssize_t hold_bytes_r = 0;
- unsigned char *hold_buf = NULL;
- char hold_cnt = 0;
-
- while (1) {
- // Waiting for I2S event.
- if (xQueueReceive(i2s_queue, &event, portMAX_DELAY)) {
- switch (event.type) {
- case I2S_EVENT_RX_DONE:
- // Event of I2S receiving data
- if (!hold_cnt) {
- buf = eos_net_alloc();
- buf[0] = EOS_CELL_MTYPE_PCM_DATA;
- bytes_r = eos_cell_pcm_read(buf + 1, PCM_MIC_WM);
- eos_net_send(EOS_NET_MTYPE_CELL, buf, bytes_r + 1, 0);
- } else {
- hold_cnt--;
- if (hold_buf == NULL) {
- hold_buf = eos_net_alloc();
- hold_buf[0] = EOS_CELL_MTYPE_PCM_DATA;
- }
- if (1 + hold_bytes_r + PCM_MIC_WM <= EOS_NET_SIZE_BUF) hold_bytes_r += eos_cell_pcm_read(hold_buf + 1 + hold_bytes_r, PCM_MIC_WM);
- if (hold_cnt == 0) {
- eos_net_send(EOS_NET_MTYPE_CELL, hold_buf, hold_bytes_r + 1, 0);
- hold_bytes_r = 0;
- hold_buf = NULL;
- }
- }
-
- buf = NULL;
- xSemaphoreTake(mutex, portMAX_DELAY);
- if (pcm_hold_tx && (eos_msgq_len(&pcm_evt_q) == PCM_HOLD_CNT_TX)) pcm_hold_tx = 0;
- if (!pcm_hold_tx) eos_msgq_pop(&pcm_evt_q, &_type, &buf, &bytes_e, NULL);
- xSemaphoreGive(mutex);
-
- if (buf) {
- i2s_write(I2S_NUM_0, (const void *)buf, bytes_e, &bytes_w, portMAX_DELAY);
- xSemaphoreTake(mutex, portMAX_DELAY);
- eos_bufq_push(&pcm_buf_q, buf);
- xSemaphoreGive(mutex);
- }
- break;
- case I2S_EVENT_DMA_ERROR:
- ESP_LOGE(TAG, "*** I2S DMA ERROR ***");
- break;
- case I2S_EVENT_MAX:
- hold_cnt = PCM_HOLD_CNT_RX;
- break;
- default:
- break;
- }
- }
- }
- vTaskDelete(NULL);
-}
-
-void eos_cell_pcm_init(void) {
- int i;
-
- i2s_config_t i2s_config = {
- .mode = I2S_MODE_SLAVE | I2S_MODE_TX | I2S_MODE_RX,
- .sample_rate = 32000,
- .bits_per_sample = 32,
- .channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
- .communication_format = I2S_COMM_FORMAT_I2S,
- .dma_buf_count = 4,
- .dma_buf_len = PCM_MIC_WM,
- .use_apll = true,
- .fixed_mclk = 2048000 * 8,
- .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1
- };
-
- i2s_pin_config_t pin_config = {
- .bck_io_num = PCM_GPIO_BCK,
- .ws_io_num = PCM_GPIO_WS,
- .data_in_num = PCM_GPIO_DIN,
- .data_out_num = PCM_GPIO_DOUT
- };
- i2s_driver_install(I2S_NUM_0, &i2s_config, 10, &i2s_queue); //install and start i2s driver
- i2s_stop(I2S_NUM_0);
- i2s_set_pin(I2S_NUM_0, &pin_config);
- gpio_matrix_in(pin_config.ws_io_num, I2S0I_WS_IN_IDX, 1);
- gpio_matrix_in(pin_config.bck_io_num, I2S0I_BCK_IN_IDX, 1);
- ESP_LOGI(TAG, "TX FIFO:%d TX CHAN:%d RX FIFO:%d RX CHAN:%d", I2S[I2S_NUM_0]->fifo_conf.tx_fifo_mod, I2S[I2S_NUM_0]->conf_chan.tx_chan_mod, I2S[I2S_NUM_0]->fifo_conf.rx_fifo_mod, I2S[I2S_NUM_0]->conf_chan.rx_chan_mod);
-
- I2S[I2S_NUM_0]->fifo_conf.tx_fifo_mod = 2;
- I2S[I2S_NUM_0]->conf_chan.tx_chan_mod = 0;
-
- I2S[I2S_NUM_0]->fifo_conf.rx_fifo_mod = 3;
- I2S[I2S_NUM_0]->conf_chan.rx_chan_mod = 1;
- // I2S[I2S_NUM_0]->conf.tx_mono = 1;
- I2S[I2S_NUM_0]->conf.rx_mono = 1;
- // I2S[I2S_NUM_0]->timing.tx_dsync_sw = 1
- // I2S[I2S_NUM_0]->timing.rx_dsync_sw = 1
- // I2S[I2S_NUM_0]->conf.sig_loopback = 0;
-
- // I2S[I2S_NUM_0]->timing.tx_bck_in_inv = 1;
-
- eos_msgq_init(&pcm_evt_q, pcm_evtq_array, PCM_SIZE_BUFQ);
- eos_bufq_init(&pcm_buf_q, pcm_bufq_array, PCM_SIZE_BUFQ);
- for (i=0; i<PCM_SIZE_BUFQ; i++) {
- eos_bufq_push(&pcm_buf_q, malloc(PCM_SIZE_BUF));
- }
-
- mutex = xSemaphoreCreateBinary();
- xSemaphoreGive(mutex);
-
- // Create a task to handle i2s event from ISR
- xTaskCreate(i2s_event_task, "i2s_event", EOS_TASK_SSIZE_I2S, NULL, EOS_TASK_PRIORITY_I2S, NULL);
- ESP_LOGI(TAG, "INIT");
-}
-
-ssize_t eos_cell_pcm_read(unsigned char *data, size_t size) {
- static unsigned char buf[PCM_SIZE_BUF];
- size_t bytes_r;
- int i;
-
- if (size > PCM_MIC_WM) return EOS_ERR;
-
- esp_err_t ret = i2s_read(I2S_NUM_0, (void *)buf, size * 4, &bytes_r, portMAX_DELAY);
- if (ret != ESP_OK) return EOS_ERR;
-
- for (i=0; i<size/2; i++) {
- data[i * 2] = buf[i * 8 + 3];
- data[i * 2 + 1] = buf[i * 8 + 2];
- }
-
- return bytes_r / 4;
-}
-
-static ssize_t pcm_expand(unsigned char *buf, unsigned char *data, size_t size) {
- int i;
-
- if (size > PCM_MIC_WM) return EOS_ERR;
-
- memset(buf, 0, PCM_SIZE_BUF);
- for (i=0; i<size/2; i++) {
- buf[i * 8 + 3] = data[i * 2];
- buf[i * 8 + 2] = data[i * 2 + 1];
- }
-
- return size * 4;
-}
-
-int eos_cell_pcm_push(unsigned char *data, size_t size) {
- unsigned char *buf = NULL;
- ssize_t esize;
- int rv;
-
- if (size > PCM_MIC_WM) return EOS_ERR;
-
- xSemaphoreTake(mutex, portMAX_DELAY);
- if (pcm_hold_tx && (eos_msgq_len(&pcm_evt_q) == PCM_HOLD_CNT_TX)) {
- unsigned char _type;
- uint16_t _len;
-
- eos_msgq_pop(&pcm_evt_q, &_type, &buf, &_len, NULL);
- } else {
- buf = eos_bufq_pop(&pcm_buf_q);
- }
- xSemaphoreGive(mutex);
-
- if (buf == NULL) return EOS_ERR_EMPTY;
-
- esize = pcm_expand(buf, data, size);
- if (esize < 0) {
- xSemaphoreTake(mutex, portMAX_DELAY);
- eos_bufq_push(&pcm_buf_q, buf);
- xSemaphoreGive(mutex);
- return esize;
- }
-
- xSemaphoreTake(mutex, portMAX_DELAY);
- rv = eos_msgq_push(&pcm_evt_q, PCM_ETYPE_WRITE, buf, esize, 0);
- if (rv) eos_bufq_push(&pcm_buf_q, buf);
- xSemaphoreGive(mutex);
-
- return rv;
-}
-
-void eos_cell_pcm_start(void) {
- i2s_event_t evt;
-
- xSemaphoreTake(mutex, portMAX_DELAY);
- while (1) {
- unsigned char _type;
- unsigned char *buf;
- uint16_t len;
-
- eos_msgq_pop(&pcm_evt_q, &_type, &buf, &len, NULL);
- if (buf) {
- eos_bufq_push(&pcm_buf_q, buf);
- } else {
- break;
- }
- }
- pcm_hold_tx = 1;
- xSemaphoreGive(mutex);
-
- evt.type = I2S_EVENT_MAX; /* my type */
- xQueueSend(i2s_queue, &evt, portMAX_DELAY);
- i2s_zero_dma_buffer(I2S_NUM_0);
- i2s_start(I2S_NUM_0);
-}
-
-void eos_cell_pcm_stop(void) {
- i2s_stop(I2S_NUM_0);
-}
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