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enable RCC for alternate UART function

This commit is contained in:
King Kévin 2016-09-13 22:41:31 +02:00
parent 79d76ee0fd
commit 2d8edda833
2 changed files with 2 additions and 0 deletions
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1
lib/sensor_pzem.c
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@ -50,6 +50,7 @@ volatile bool sensor_pzem_measurement_received = false;
void sensor_pzem_setup(void)
{
/* enable USART I/O peripheral */
rcc_periph_clock_enable(RCC_AFIO); // enable pin alternate function (USART)
rcc_periph_clock_enable(USART_PORT_RCC(SENSOR_PZEM_USART)); // enable clock for USART port peripheral
rcc_periph_clock_enable(USART_RCC(SENSOR_PZEM_USART)); // enable clock for USART peripheral
gpio_set_mode(USART_PORT(SENSOR_PZEM_USART), GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, USART_PIN_TX(SENSOR_PZEM_USART)); // setup GPIO pin USART transmit

1
lib/usart.c
View File

@ -57,6 +57,7 @@ void usart_setup(void)
/* enable USART I/O peripheral */
rcc_periph_clock_enable(USART_PORT_RCC(USART_ID)); // enable clock for USART port peripheral
rcc_periph_clock_enable(USART_RCC(USART_ID)); // enable clock for USART peripheral
rcc_periph_clock_enable(RCC_AFIO); // enable pin alternate function (USART)
gpio_set_mode(USART_PORT(USART_ID), GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, USART_PIN_TX(USART_ID)); // setup GPIO pin USART transmit
gpio_set_mode(USART_PORT(USART_ID), GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, USART_PIN_RX(USART_ID)); // setup GPIO pin USART receive
gpio_set(USART_PORT(USART_ID), USART_PIN_RX(USART_ID)); // pull up to avoid noise when not connected