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stm32/i2c: Fix clock enable for I2C4 on STM32F7 MCUs.

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This was broken by 5aec051f9f0e1be9750ca4f08478275f298087a3 when adding
support for I2C4 on H7 MCUs.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2024-03-28 13:53:24 +11:00
parent a7d34b6f7c
commit a521df27dc
1 changed files with 9 additions and 13 deletions
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14
ports/stm32/i2c.c
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@ -312,19 +312,15 @@ int i2c_init(i2c_t *i2c, mp_hal_pin_obj_t scl, mp_hal_pin_obj_t sda, uint32_t fr
// Enable I2C peripheral clock
volatile uint32_t tmp;
(void)tmp;
switch (i2c_id) {
case 0:
case 1:
case 2:
RCC->APB1ENR |= RCC_APB1ENR_I2C1EN << i2c_id;
tmp = RCC->APB1ENR; // delay after RCC clock enable
break;
#if defined(STM32H7)
case 3:
if (i2c_id == 3) {
RCC->APB4ENR |= RCC_APB4ENR_I2C4EN;
tmp = RCC->APB4ENR; // delay after RCC clock enable
break;
} else
#endif
{
RCC->APB1ENR |= RCC_APB1ENR_I2C1EN << i2c_id;
tmp = RCC->APB1ENR; // delay after RCC clock enable
}
// Initialise I2C peripheral