WiFive wrote:Yes, esptool just doesn't have it listed

Thanks! Good to go then.

I made my own board using ESP32-PICO-D4. When flashing it, I found something like this: Flashing binaries to serial port /dev/cu.SLAB_USBtoUART (app at offset 0x10000)... esptool.py v2.1 Connecting........_ Chip is unknown ESP32 (revision 0) Uploading stub... Running stub... Stub running... Changing...

Hello, I already record and playback audio with i2s. I now want to store a 16 Bit pcm sample encoded file from what i can read from. I dropped the file in the same folder my .c file is located. but excecuteing this code: printf("Start reading file\n\n\n"); FILE *f = fopen("Test.raw", "rb"); fseek(f...

Guys,

Anyone made it to create a simple recording functionality with discussed I2S mics?
Tried to store the bytes read from the mic and store as they are, apparently I can not do playback well. The result playback somehow is too fast.

Thanks for any ideas and directions.

Here is a complete example, I verified it works: /* * app_main.c * * Created on: 30.03.2017 * Author: michaelboeckling */ #include <stdlib.h> #include <stddef.h> #include <inttypes.h> #include <string.h> #include <stdio.h> #include <stdbool.h> #include <sys/time.h> #include "freertos/FreeRTOS.h" #i...

int cnt = 0; uint64_t buffer = 0; char buf[4096]; while(1) { cnt++; buffer = 0; int bytes_read = i2s_read_bytes(I2S_NUM_1, buf, sizeof(buf), 0); int samples_read = bytes_read / 2 / (I2S_BITS_PER_SAMPLE_32BIT / 8); char *buf_ptr_read = buf[0]; char *buf_ptr_write = buf[0]; const char samp64[8]; for(...

As I struggled with this myself, this thread helped me getting started, and finally made it to capture the voice using SPH0645LM4H and playback to confirm. Thanks guys! So, for future reference, here's the complete code I use combining all code posted earlier: i2s_config_t i2s_config_rx = { mode: (i...

Please check suggestions in this topic and follow up there if problem persists: http://www.esp32.com/viewtopic.php?f=2&t=322 Long time not updating. Regarding the MD5 issue, I've solved it by changing the SPI flash IC. Initially I used S25FL116K0XMFI011. Then I used the exact IC as ESP-WROOM (and o...

More update. So we managed to solder the flash IC and success booting from flash. It's time to upload a firmware. And when I did, it is ALMOST success, until the very last error: A fatal error occurred: MD5 of file does not match data in flash! The complete log: esptool.py v2.0-dev Connecting... Upl...

Thanks again for your reply and directions. Will check and revise the schematics. Just an update. So we solder one more chip to a new PCB, by only soldering the chip, chip enabled pullup resistor, 40Mhz crystal and capacitors, and carefully inspect the solder quality, hey...it starts to spit out som...