About LCE

LCE · 2024-09-09

Heyho,I'm using a H733 with both SAI 1 and SAI 4 with SAI 1 as I2S clock master to get 8 synced audio channels.Audio clock comes from I2SCKIN, this is used for SAIs and I2S.Problem: because of the fixed oversampling ratio (256 or 512) of the SAI, I h...

LCE · 2024-08-12

Quick question concerning L0 internal EEPROM...From RM0377, page 79:Write to data EEPROM...DescriptionThis operation aims at writing a word or a part of a word in the data EEPROM. The usermust write the right value at the right address and with the r...

LCE · 2024-07-23

... leads to "funny" results:STM32L011 with 16 kB of flash, HAL inits and LED toggle in main, DEBUG, no optimization:93% of flash usedI had not expected it to be that bad! Okay, I will probably not use too much HAL, will use Release version with opti...

LCE · 2024-07-22

Heyho,there's lots of info in the datasheets and the AN2867 about the specs of the HSE / LSE oscillators with passive crystals...But I'd like to have some "measurable" *** specs, so that I can compare a real life custom board, which means:voltage lev...

LCE · 2024-07-16

Heyho,for a new project I need an MCU with 2 channels of 16bit / 50kHz ADC.It looks like the F373's sigma delta ADC (SDADC) might be good enough (it will be calibrated for accuracy anyway).But I haven't found any info about the SDADC's digital low pa...

LCE · 2024-10-01

Have you enabled the lwIP debug messages, really helpful to check that via UART (I'm using UART TX DMA at ~1Mbps).There's so much stuff going on... and lwIP's function "trees" in some parts are so terrible to trace.

LCE · 2024-10-01

Sorry, I don't.

LCE · 2024-09-30

> My vision would be to send to a IP address of at say AWS and users could stream off of that...Live streaming to or from AWS? Anyway, I have no idea about that.Sometimes Windows 10 alone has other stuff in mind, and the more nodes in the network, th...

LCE · 2024-09-30

The SysTick is just not made for "long-time-keeping", it's a very CPU-efficient (32bit var increment) way of handling time within "typical CPU alive-time", like timeouts, task scheduling and so on.And nobody keeps anybody from not using HAL, you're s...

LCE · 2024-09-30

I'm doing that with the H723 / H733 / H735.8 audio channels (I2S from the 2 SAIs) at 32 bit / 200 kHz (51.2 Mbit/s) via DMA to internal SRAM buffers to HyperRAM via DMA to ETH via TCP to PC host.I use lwIP (some minor parts tuned a little) and self-m...

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Synchronize peripherals SAI & I2S output clocks

L0 internal EEPROM - simply overwrite?

STM32 with small flash + HAL + DEBUG + no Optimization...

STM32H73x: HSE / LSE oscillator levels with passive crystals

STM32F373 Sigma Delta ADC: Filter Specs & FFT plots ?

Re: Issue with LWIP heap

Re: low latency streaming audio over IP --- NUCLEO-H723ZG

Re: low latency streaming audio over IP --- NUCLEO-H723ZG

Re: Why uwTick in HAL is uint32_t type?

Re: low latency streaming audio over IP --- NUCLEO-H723ZG