matei/lemon-pepper-stepper
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

get ADC trigger working

Browse Source
This commit is contained in:
matei jordache
2023-11-12 15:38:01 -05:00
parent 4f26202837
commit 1c711e71dc
3 changed files with 29 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
firmware/lib/currentsense/utils.cpp
View File

@@ -115,12 +115,21 @@ void _driverSyncLowSide(void *_driver_params, void *_cs_params)
_stopTimers(driver_params->timers, 6);
// See RM0440 pg. 1169
// This grabs the timer handle used for ADC and sets the direction bit as upcounting (?)
// Grab the timer handle used for ADC and sets the direction bit as upcounting
cs_params->timer_handle->getHandle()->Instance->CR1 |= TIM_CR1_DIR;
// This sets the value of the timer to the reload value. I think this is so that an event is immediately fired
/** Set the value of the timer to the reload value, so that overflow event is generated immediately.
* This is because we are using repetition counter to count every other event, skipping the underflow at
* valleys of PWM. We can downsample every other peak if repetition counter is increased to 3
*/
cs_params->timer_handle->getHandle()->Instance->CNT = cs_params->timer_handle->getHandle()->Instance->ARR;
// Set TIM_CR1_URS to 0b1 -> only update events are overflows/underflow
cs_params->timer_handle->getHandle()->Instance->CR1 |= 0x0004;
// Set TIM_CR2_MMS to 0b010 -> update event (overflow and underflow) mapped to tim2_trgo
cs_params->timer_handle->getHandle()->Instance->CR2 |= 0x0020;
_startTimers(driver_params->timers, 6);
}