About TKube.1

TKube.1 · 2020-08-18

Details:MasterMode: HAL_I2C_MODE_MEMClockspeed 400kb/sSymptoms:In Master-MODE_MEM after memory address has been sent a repeated start should be sent (in I2C_MemoryTransmit_TXE_BTF()) before the switch to read. However if the ISR is handled quickly th...

TKube.1 · 2020-08-27

I'm sorry I think I got the states of the normal sequence one step incorrect (its a bit hard to match manually).I think this might be more correct:

TKube.1 · 2020-08-27

I tried to make a better image with both a normal sequence and one with the double start, I think I got the states correct but its a bit perplexing, but it might be of interest.

TKube.1 · 2020-08-26

And here is a zoomed in view to see the phases if ISR handler and the double start:It looks like the second start is actually triggered before START released event (0x0030001).

TKube.1 · 2020-08-26

Sorry, there was a problem with the last image, here it is:

TKube.1 · 2020-08-26

I2C bus @400kb, read *one* byte in memory mode from slave 0x6B.Bottom row is a GPIO that I bring high when entering HAL_I2C_EV_IRQHandler() and low when I exit.Added event log code to HAL_I2C_EV_IRQHandler(): #if DEBUG_I2C_EVENTSif(evtCnt < (MAXBUF))...

User statistics

User Activity

Potential bug in I2C HAL layer (STM32Cube_FW_F4_V1.25.0) in I2C_MemoryTransmit_TXE_BTF() ?

Re: Potential bug in I2C HAL layer (STM32Cube_FW_F4_V1.25.0) in I2C_MemoryTransmit_TXE_BTF() ?

Re: Potential bug in I2C HAL layer (STM32Cube_FW_F4_V1.25.0) in I2C_MemoryTransmit_TXE_BTF() ?

Re: Potential bug in I2C HAL layer (STM32Cube_FW_F4_V1.25.0) in I2C_MemoryTransmit_TXE_BTF() ?

Re: Potential bug in I2C HAL layer (STM32Cube_FW_F4_V1.25.0) in I2C_MemoryTransmit_TXE_BTF() ?

Re: Potential bug in I2C HAL layer (STM32Cube_FW_F4_V1.25.0) in I2C_MemoryTransmit_TXE_BTF() ?