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STM32 I2C pullups config turned off for testing

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pmantoine 2024-01-13 10:51:27 +08:00
parent ba3d29e4b5
commit 8503835e1c
1 changed files with 1 additions and 1 deletions
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I2CManager_STM32.h
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@ -185,7 +185,7 @@ void I2CManagerClass::I2C_init()
GPIOB->OTYPER |= (1<<8) | (1<<9); // PB8 and PB9 set to open drain output capability
GPIOB->OSPEEDR |= (3<<(8*2)) | (3<<(9*2)); // PB8 and PB9 set to High Speed mode
GPIOB->PUPDR &= ~((3<<(8*2)) | (3<<(9*2))); // Clear all PUPDR bits for PB8 and PB9
GPIOB->PUPDR |= (1<<(8*2)) | (1<<(9*2)); // PB8 and PB9 set to pull-up capability
// GPIOB->PUPDR |= (1<<(8*2)) | (1<<(9*2)); // PB8 and PB9 set to pull-up capability
// Alt Function High register routing pins PB8 and PB9 for I2C1:
// Bits (3:2:1:0) = 0:1:0:0 --> AF4 for pin PB8
// Bits (7:6:5:4) = 0:1:0:0 --> AF4 for pin PB9