ChibiOS Free Embedded RTOS

FYI, issue raised in previous post has not been fixed in current 17.6.x branch. FatFS archive still contains ffconf.h, which overrides/breaks user-defined configuration.

Where did this code go? halconf.h says "MMC support is not yet implemented" but I see that barthess spent a fair amount of time working on this.

As a workaround, I found that not stopping the I2S driver between stop() and start() fixes the issue. I'll just stop and start the exchange instead as of now.

Thanks for your answer. The microphone is getting a power reset before it's re-enabled, hence my hypothesis that it might be linked to the driver/the DMA, but it is hard to investigate.
The SPI SR register is 0 before restarting the I2S so everything looks good, yet the buffer begins with the least ...

Hello,

I am getting data from a 24 bits I2S microphone on an STM32F417. As per the reference manual, I2S DMA access is done in half words.
Therefore, when I iterate over the RX buffer, i2s_rx_buf[0] is 0x8EAA and i2s_rx_buf[1] is 0x33XX if the microphone sent the word 0x8EAA33. So far so good ...

Turned out to be an undetected stack overflow. Sorry about that.

There's no other task using I2C and this spurious interrupt comes after my call to the transmit function so I suspect this is the intended interrupt (especially since the rx buffer contains the data I am expecting), that's why I thought it might come from a misuse of the API.
If that does not ring a ...

Hi,

I am running an STM32F417.

When I start an I2C3 transfer using i2cMasterTransmitTimeout(), I encounter the following assertion error (chthreads.c:571), called by the _i2c_wakeup_isr from the I2C interrupt "i2c_lld_serve_event_interrupt" (I2Cv1/i2c_lld.c:322):
chDbgAssert(tp->p_state == CH ...

Hi RM,

Sorry for the late answer. You're talking about line 179, I'm talking about line 219.
I believe it is for this MCU (and it does fix the problem at compilation time):
#if defined(STM32F40_41xxx) || defined(__DOXYGEN__)

Here is the patch:

diff --git a/os/hal/ports/STM32/STM32F4xx/hal_lld ...

Hi,

hal/ports/STM32/STM32F4xx/hal_lld.h defines the following:
#define STM32_PLLVCO_MIN 192000000

And performs following check:
#if ((STM32_PLLI2SN_VALUE >= 192) && (STM32_PLLI2SN_VALUE <= 432)) &#46;&#46;&#46;
&#46;&#46;&#46;
#else
#error
#endif

However, reference manual page 205 says that ...