search

rusefi / rusefi-hardware

14 stars 19 forks source link

GD32 ADC start-up timing #120

Open rusefillc opened 2 years ago

rusefillc commented 2 years ago

GD32 ADC start-up has a specific timing requirment which ChibiOS does not fulfil

At the moment our work around is to set opimization level to none

we shall hack ChibOS maybe even by adding "isGd32 judging by newer ARM kernel version" runtime check

rusefillc commented 2 years ago

See https://rusefi.com/forum/viewtopic.php?p=44933#p44933 compatibility sumup between GD32 and STM32_V2.0.pdf

  1. ADC collection

ADC Sampling settings describe ADC start-up resolvent There are three aspects

When ADON=0 Write on 1 after , Need to wait for a while t_WAIT, If you use ST Ku's words It's just ADC_CMD Back plus 20us Left and right delay .

If interrupt is used to obtain sampling data , Need software to clear interrupts .

rusefillc commented 2 years ago

Kind of relevant https://github.com/rusefi/rusefi-hardware/issues/127

rusefillc commented 2 years ago

See https://github.com/rusefi/ChibiOS/commit/0ce1cbd649f4bb2d9db941e729d3308b247b8696 for real stm32 check