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MayaPosch/stm32_gpio_output_f0-4-7.cpp Secret

Created October 28, 2020 14:51
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STM32 GPIO output F0/4/7
Raw
stm32_gpio_output_f0-4-7.cpp
uint8_t pin2 = pin * 2;
instance.regs->MODER &= ~(0x3 << pin2);
instance.regs->MODER |= (0x1 << pin2);
instance.regs->PUPDR &= ~(0x3 << pin2);
if (pupd == GPIO_PULL_UP) {
instance.regs->PUPDR |= (0x1 << pin2);
}
else if (pupd == GPIO_PULL_DOWN) {
instance.regs->PUPDR |= (0x2 << pin2);
}
if (type == GPIO_PUSH_PULL) {
instance.regs->OTYPER &= ~(0x1 << pin);
}
else if (type == GPIO_OPEN_DRAIN) {
instance.regs->OTYPER |= (0x1 << pin);
}
if (speed == GPIO_LOW) {
instance.regs->OSPEEDR &= ~(0x3 << pin2);
}
else if (speed == GPIO_MID) {
instance.regs->OSPEEDR &= ~(0x3 << pin2);
instance.regs->OSPEEDR |= (0x1 << pin2);
}
else if (speed == GPIO_HIGH) {
instance.regs->OSPEEDR &= ~(0x3 << pin2);
instance.regs->OSPEEDR |= (0x3 << pin2);
}
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