About PCamp.2

PCamp.2 · 2022-11-21

STM32F411. Line 2693: srcclk = __HAL_RCC_GET_I2S_SOURCE();That macro calls "READ_BIT" on the I2SSRC register bit.It does NOT shift it right 23U.The function then compares this to 0 or 1.FAIL.Result. I2S cannot be configured to use an external clo...

PCamp.2 · 2022-11-21

I have 2 I2S ports. I have a masterclock from an external source.My clock config is set for external 24.576Mhz I2S clock.I have set up I2S1 in half duplex slave mode for an ADC. It is receiving data in DMA.I have setup I2S2 in half duplex master mode...

PCamp.2 · 2022-11-12

I am using STMCubeIDE latest and an F411CE.I used the MX wizard to enable USB_Audio class device set to 48000 s/sI configured an I2S with master clock on IS2.It plays whether I start the circular DMA in the AUDIO_Init function or in the AUDIO_CMD_STA...

PCamp.2 · 2022-10-23

I got this working, then it stopped working.I finally figured out after about 3 hours what is wrong.Situation. I am making a "Serial tap" for debugging. The STM32F411CE on the Black Pill board. 2xUSARTs Rx only and the CDC Virtual COM port device ...

PCamp.2 · 2022-10-18

I was initially getting away with developing on a network drive.However it has all started to come apart.If I attempt to create a new project while the %HOME%\STM32Cube\Repository is on a network drive I get things like "Unable to unzip firmware..."W...

PCamp.2 · 2022-11-23

Of course, the amateur market and makers space is probably a tiny like slither of the main profressional and industrial embedded systems which make up most of the MCU market.

PCamp.2 · 2022-11-23

I can put a foot in either camp. HAL versus DIY low level coding.It's basically just allowing multiple "levels" to program at. A high level API / Façade for when you just want to rapidly prototype things without having to study session the datashee...

PCamp.2 · 2022-11-21

__HAL_RCC_I2S_CONFIG(RCC_I2SCLKSOURCE_EXT);Fixes it. The code that sets all this up in the HAL libraries is a mess of ifdef this ifdef that and multiple layers of macro expansion. I'm not surprised it has bugs.

PCamp.2 · 2022-11-21

I have a lead.Stepping through the code, reading the reference manual, rinse repeat.I found this function:uint32_t HAL_RCCEx_GetPeriphCLKFreq(uint32_t PeriphClk)Which calls: /* Get the current I2S source */ srcclk = __HAL_RCC_GET_I2S_SOURC...

PCamp.2 · 2022-11-21

If you removed all the magic numbers. (assign them to constants)Stop using abreviations and contractions for variable/function names...the rest of it would read like english.case OP_CODE_1169_USERREQ1: ES9038_Set_OutOfPhase()That is almost english....

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stm32f4xx_hal_rcc_ex.c invalid non shifted comparison

I2S No operation what so ever.

USB_Audio -> I2S DAC Corrupted packet on buffer roll back

USART Receive to Idle DMA callbacks

Developing in CubeIDE on network drive - corruption.

Re: stm32f4xx_hal_rcc_ex.c invalid non shifted comparison

Re: stm32f4xx_hal_rcc_ex.c invalid non shifted comparison

Re: I2S No operation what so ever.

Re: I2S No operation what so ever.

Re: USB_Audio -> I2S DAC Corrupted packet on buffer roll back