Ah, interesting. I didn't know that. I need to experiment!

I'm confused about I2s. Suppose I have the code:

esp_err_t ret;


static const int i2s_num = 0; // i2s port number

static const i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN,
.sample_rate = 8000,
.bits_per_sample = 8,
.channel_format = I2S ...

Just a follow-up. Here is sets the bits per sample to be 8:
https://esp-idf-zh.readthedocs.io/zh_CN ... s/i2s.html

I still couldn't get my code to work properly, though.

OK, I thought I solved things just now, but apparently not. I've got


static const int i2s_num = 0; // i2s port number

#define RATE 8000

static const i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN,
.sample_rate = RATE,
.bits_per_sample = I2S_BITS ...

I'm curious as to why i2s_config_t doesn't allow a bits_per_sample of 8. Given that the DAC pins are only 8 bits, surely it would make sense?

It means that we have to either pad our samples or store/transmit twice as much data as we need.

I think it's certainly OK to only service one connection at a time whilst keeping the others in a blocked state. Servicing multiple connections would require a much more elaborate solution, which would be too complex for the example.

OK, I've had a chance to try the proposed patch (after much fiddling around with updates).

My conclusion: it fixes the big problem everyone has been having, but still contains a bug.

The bug is this: if two clients try to connect at the same time, then the second one will block (which I think is ...

OK. Thanks. I'll give it a go when I have a spare ESP. All of mine are currently in-service.

Did you try the PR I linked to? I didn't have any problems with it, but my use case may be different.

Please provide the link, as it's not on this thread.

OK, I think I have gotten things to work better. Here's my revised code:


int setup_listen_sock(int *ptr_listen_sock)
{
char addr_str[128];
int addr_family;
int ip_protocol;
int err = 0;
#ifdef CONFIG_EXAMPLE_IPV4
struct sockaddr_in destAddr;
destAddr.sin_addr.s_addr = htonl(INADDR_ANY ...