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fix HardwareSerial::begin by doing gpio_set_af_mode AF8 when devices are UART4 or UART5

This commit is contained in:
Martin Ayotte 2015-07-05 10:15:33 -04:00
parent 17edc3743f
commit d5dbdb685c
1 changed files with 8 additions and 2 deletions
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10
STM32F4/cores/maple/libmaple/HardwareSerial.cpp
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@ -94,8 +94,14 @@ void HardwareSerial::begin(uint32 baud) {
const stm32_pin_info *rxi = &PIN_MAP[rx_pin];
#ifdef STM32F2
// int af = 7<<8;
gpio_set_af_mode(txi->gpio_device, txi->gpio_bit, 7);
gpio_set_af_mode(rxi->gpio_device, rxi->gpio_bit, 7);
if (usart_device == UART4 || usart_device == UART5) {
gpio_set_af_mode(txi->gpio_device, txi->gpio_bit, 8);
gpio_set_af_mode(rxi->gpio_device, rxi->gpio_bit, 8);
}
else {
gpio_set_af_mode(txi->gpio_device, txi->gpio_bit, 7);
gpio_set_af_mode(rxi->gpio_device, rxi->gpio_bit, 7);
}
gpio_set_mode(txi->gpio_device, txi->gpio_bit, (gpio_pin_mode)(GPIO_AF_OUTPUT_PP | GPIO_PUPD_INPUT_PU | 0x700));
gpio_set_mode(rxi->gpio_device, rxi->gpio_bit, (gpio_pin_mode)(GPIO_MODE_AF | GPIO_PUPD_INPUT_PU | 0x700));
//gpio_set_mode(txi->gpio_device, txi->gpio_bit, (gpio_pin_mode)(GPIO_PUPD_INPUT_PU));