Druk-3D/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-12-17 05:39:57 +01:00
Code Issues Packages Projects Releases Wiki Activity

stm32: Add comments to configuration of OSPEEDR gpio speed

Browse Source 
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2021-10-12 13:32:46 -04:00
parent 9d9fe3cb1b
commit 1b801508ba
4 changed files with 15 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/stm32/stm32h7.c
View File

@@ -102,6 +102,8 @@ gpio_clock_enable(GPIO_TypeDef *regs)
enable_pclock((uint32_t)regs);
}
#define STM_OSPEED 0x2 // ~85Mhz at 50pF
// Set the mode and extended function of a pin
void
gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup)
@@ -122,7 +124,7 @@ gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup)
regs->MODER = (regs->MODER & ~m_msk) | (mode_bits << m_shift);
regs->PUPDR = (regs->PUPDR & ~m_msk) | (pup << m_shift);
regs->OTYPER = (regs->OTYPER & ~(1 << pos)) | (od << pos);
regs->OSPEEDR = (regs->OSPEEDR & ~m_msk) | (0x02 << m_shift);
regs->OSPEEDR = (regs->OSPEEDR & ~m_msk) | (STM_OSPEED << m_shift);
}
#if !CONFIG_STM32_CLOCK_REF_INTERNAL