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Added I2C clock config

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This commit is contained in:
Ea-r-th
2025-09-16 00:38:36 -07:00
parent d4136f0761
commit 7b32859c88
4 changed files with 48 additions and 12 deletions
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27
SHAL/Src/Core/SHAL_CORE.cpp
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@@ -10,18 +10,29 @@ void SHAL_init(){
void systick_init(){
SysTick->CTRL = 0; //disable first
SysTick->LOAD = 0xFFFFFF; //max 24-bit
SysTick->VAL = 0; //clear
SysTick->CTRL = 0; //Disable first
SysTick->LOAD = 0xFFFFFF; //Max 24-bit
SysTick->VAL = 0; //Clear
SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk;
}
void SHAL_delay_us(uint32_t us){
uint32_t start = SysTick->VAL;
uint32_t ticks = us * (SystemCoreClock / 1000000U);
//handle wraparound with 24-bit mask
while (((start - SysTick->VAL) & 0x00FFFFFF) < ticks) { }
void SHAL_delay_us(uint32_t us){
uint32_t ticks = us * (SystemCoreClock / 1000000U);
uint32_t start = SysTick->VAL;
//Calculate target value (may wrap around)
uint32_t target = (start >= ticks) ? (start - ticks) : (start + 0x01000000 - ticks);
target &= 0x00FFFFFF;
//Wait until we reach the target
if (start >= ticks) {
//No wraparound case
while (SysTick->VAL > target) {}
} else {
while (SysTick->VAL <= start) {} //Wait for wraparound
while (SysTick->VAL > target) {} //Wait for target
}
}
void SHAL_delay_ms(uint32_t ms){