3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-07-25 15:44:13 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

stm32f4: Only enable peripherals once

Browse source 
Add is_enabled_pclock() and only initialize spi and adc once during
configuration.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-07-28 17:55:57 -04:00
parent ef0784afe6
commit bc9c8cd7a0
4 changed files with 35 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/stm32f4/adc.c
View file

@ -34,15 +34,17 @@ gpio_adc_setup(uint32_t pin)
}
// Enable the ADC
enable_pclock(ADC1_BASE);
uint32_t aticks = 3; // 56 adc cycles
ADC1->SMPR1 = (aticks | (aticks << 3) | (aticks << 6) | (aticks << 9)
| (aticks << 12) | (aticks << 15) | (aticks << 18)
| (aticks << 21) | (aticks << 24));
ADC1->SMPR2 = (aticks | (aticks << 3) | (aticks << 6) | (aticks << 9)
| (aticks << 12) | (aticks << 15) | (aticks << 18)
| (aticks << 21) | (aticks << 24) | (aticks << 27));
ADC1->CR2 = ADC_CR2_ADON;
if (!is_enabled_pclock(ADC1_BASE)) {
enable_pclock(ADC1_BASE);
uint32_t aticks = 3; // 56 adc cycles
ADC1->SMPR1 = (aticks | (aticks << 3) | (aticks << 6) | (aticks << 9)
| (aticks << 12) | (aticks << 15) | (aticks << 18)
| (aticks << 21) | (aticks << 24));
ADC1->SMPR2 = (aticks | (aticks << 3) | (aticks << 6) | (aticks << 9)
| (aticks << 12) | (aticks << 15) | (aticks << 18)
| (aticks << 21) | (aticks << 24) | (aticks << 27));
ADC1->CR2 = ADC_CR2_ADON;
}
gpio_peripheral(pin, GPIO_ANALOG, 0);