我需要将 STM32L062 与 MC3413 加速度计通信，但只有当 uC 时钟设置为默认设置（16MHz HSI）并由 CubeMX 生成时，通信才有效。任何更改（例如将源更改为 ~4MHz MSI）都会导致从机不提供 ACK。我是初学者，我尝试了许多预分频器等组合，但我不知道出了什么问题。这是我的主循环代码：
while (1) {
uint8_t config1;
config1 = 0xC0;
status[0]=HAL_I2C_Mem_Write(&hi2c1, 0x98, 0x07, 1, &config1, 1, 100); // 0xC0 konfiguruje akcelerometr w tryb standby
config1 = 0x78;
status[1]=HAL_I2C_Mem_Write(&hi2c1, 0x98, 0x08, 1, &config1, 1, 100); // 0x7A wlacza wykrywanie tapniec we wszystkich osiach i 256Hz sampling
config1 = 0x05;
status[2]=HAL_I2C_Mem_Write(&hi2c1, 0x98, 0x20, 1, &config1, 1, 100); // 0x05 powinno ustawic rozdzielczosc 14bit i zakres 2g
config1 = 0xC1;
status[3]=HAL_I2C_Mem_Write(&hi2c1, 0x98, 0x07, 1, &config1, 1, 100); // 0xC1 konfiguruje akcelerometr w tryb aktywny
status[4]=HAL_I2C_Mem_Read(&hi2c1, 0x98, 0x11, 1, &polozenie_l, 1, 100);
status[5]=HAL_I2C_Mem_Read(&hi2c1, 0x98, 0x12, 1, &polozenie_h, 1, 100);
polozenie = ((polozenie_h << 8) | polozenie_l);
HAL_Delay(100);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
https://i.stack.imgur.com/sgBnY.png
https://i.stack.imgur.com/itOLC.png
