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ESP-IDF Robot ESP NOW

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This commit is contained in:
Alex B.
2024-12-24 12:43:08 -05:00
parent 3988c07b61
commit 4c3bf218ca
2 changed files with 40 additions and 1 deletions
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41
ESP-IDF_Robot/main/blink_example_main.c
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@@ -236,7 +236,46 @@ static void espnow_recv_cb (const esp_now_recv_info_t *recv_info, const uint8_t
espnow_event_t evt;
espnow_event_recv_cb_t *recv_cb = &evt.info.recv_cb;
}
void espnow_data_prepare(espnow_send_param_t *send_param) {}
/* Parse received ESPNOW data. */
int example_espnow_data_parse(uint8_t *data, uint16_t data_len, uint8_t *state, uint16_t *seq, uint32_t *magic)
{
example_espnow_data_t *buf = (example_espnow_data_t *)data;
uint16_t crc, crc_cal = 0;
if (data_len < sizeof(example_espnow_data_t)) {
ESP_LOGE(TAG, "Receive ESPNOW data too short, len:%d", data_len);
return -1;
}
*state = buf->state;
*seq = buf->seq_num;
*magic = buf->magic;
crc = buf->crc;
buf->crc = 0;
crc_cal = esp_crc16_le(UINT16_MAX, (uint8_t const *)buf, data_len);
if (crc_cal == crc) {
return buf->type;
}
return -1;
}
void espnow_data_prepare(espnow_send_param_t *send_param) {
espnow_data_t *buf = (espnow_data_t *)send_param->buffer;
assert(send_param->len >= sizeof(example_espnow_data_t));
buf->type = IS_BROADCAST_ADDR(send_param->dest_mac) ? ESPNOW_DATA_BROADCAST : ESPNOW_DATA_UNICAST;
buf->state = send_param->state;
buf->seq_num = espnow_seq[buf->type]++;
buf->crc = 0;
buf->magic = send_param->magic;
/* Fill all remaining bytes after the data with random values */
esp_fill_random(buf->payload, send_param->len - sizeof(example_espnow_data_t));
buf->crc = esp_crc16_le(UINT16_MAX, (uint8_t const *)buf, send_param->len);
}
static void espnow_task (void *pvParameter) {}
static esp_err_t espnow_init(void) {