void serial_init(serial_t *obj, PinName tx, PinName rx)
{
// Determine the UART to use (UART_1, UART_2, ...)
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT(obj->uart != (UARTName)NC);
// Enable USART clock + switch to SystemClock
if (obj->uart == UART_1) {
__USART1_CLK_ENABLE();
__HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
obj->index = 0;
}
if (obj->uart == UART_2) {
__USART2_CLK_ENABLE();
__HAL_RCC_USART2_CONFIG(RCC_USART2CLKSOURCE_SYSCLK);
obj->index = 1;
}
if (obj->uart == UART_3) {
__USART3_CLK_ENABLE();
__HAL_RCC_USART3_CONFIG(RCC_USART3CLKSOURCE_SYSCLK);
obj->index = 2;
}
// Configure the UART pins
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
pin_mode(tx, PullUp);
}
if (rx != NC) {
pin_mode(rx, PullUp);
}
// Configure UART
obj->baudrate = 9600;
obj->databits = UART_WORDLENGTH_8B;
obj->stopbits = UART_STOPBITS_1;
obj->parity = UART_PARITY_NONE;
obj->pin_tx = tx;
obj->pin_rx = rx;
init_uart(obj);
// For stdio management
if (obj->uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
/**
* @brief Initializes the RCC extended peripherals clocks according to the specified parameters in the
* RCC_PeriphCLKInitTypeDef.
* @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that
* contains the configuration information for the Extended Peripherals clocks(USART1,USART2, LPUART1,
* I2C1, RTC, USB/RNG and LPTIM1 clocks).
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit)
{
uint32_t tickstart = 0;
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RCC_PERIPHCLK(PeriphClkInit->PeriphClockSelection));
/*------------------------------- USART1 Configuration ------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART1) == RCC_PERIPHCLK_USART1)
{
/* Check the parameters */
assert_param(IS_RCC_USART1CLKSOURCE(PeriphClkInit->Usart1ClockSelection));
/* Configure the USART1 clock source */
__HAL_RCC_USART1_CONFIG(PeriphClkInit->Usart1ClockSelection);
}
/*----------------------------- USART2 Configuration --------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART2) == RCC_PERIPHCLK_USART2)
{
/* Check the parameters */
assert_param(IS_RCC_USART2CLKSOURCE(PeriphClkInit->Usart2ClockSelection));
/* Configure the USART2 clock source */
__HAL_RCC_USART2_CONFIG(PeriphClkInit->Usart2ClockSelection);
}
/*------------------------------ LPUART1 Configuration ------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LPUART1) == RCC_PERIPHCLK_LPUART1)
{
/* Check the parameters */
assert_param(IS_RCC_LPUART1CLKSOURCE(PeriphClkInit->Lpuart1ClockSelection));
/* Configure the LPUAR1 clock source */
__HAL_RCC_LPUART1_CONFIG(PeriphClkInit->Lpuart1ClockSelection);
}
/*------------------------------ I2C1 Configuration ------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2C1) == RCC_PERIPHCLK_I2C1)
{
/* Check the parameters */
assert_param(IS_RCC_I2C1CLKSOURCE(PeriphClkInit->I2c1ClockSelection));
/* Configure the I2C1 clock source */
__HAL_RCC_I2C1_CONFIG(PeriphClkInit->I2c1ClockSelection);
}
/*---------------------------- RTC configuration -------------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC))
{
/* Enable Power Clock*/
__PWR_CLK_ENABLE();
/* Enable write access to Backup domain */
PWR->CR |= PWR_CR_DBP;
/* Wait for Backup domain Write protection disable */
tickstart = HAL_GetTick();
while((PWR->CR & PWR_CR_DBP) == RESET)
{
if((HAL_GetTick() - tickstart ) > DBP_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Reset the Backup domain only if the RTC Clock source selection is modified */
if((RCC->CSR & RCC_CSR_RTCSEL) != (PeriphClkInit->RTCClockSelection & RCC_CSR_RTCSEL))
{
/* Store the content of CSR register before the reset of Backup Domain */
tmpreg = (RCC->CSR & ~(RCC_CSR_RTCSEL));
/* RTC Clock selection can be changed only if the Backup Domain is reset */
__HAL_RCC_BACKUPRESET_FORCE();
__HAL_RCC_BACKUPRESET_RELEASE();
/* Restore the Content of CSR register */
RCC->CSR = tmpreg;
}
/* If LSE is selected as RTC clock source, wait for LSE reactivation */
if(PeriphClkInit->RTCClockSelection == RCC_RTCCLKSOURCE_LSE)
{
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
__HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection);
}
#if !defined(STM32L051xx) && !defined(STM32L061xx)
/*---------------------------- USB and RNG configuration --------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USB) == (RCC_PERIPHCLK_USB))
{
assert_param(IS_RCC_USBCLKSOURCE(PeriphClkInit->UsbClockSelection));
__HAL_RCC_USB_CONFIG(PeriphClkInit->UsbClockSelection);
}
#endif /* !(STM32L051xx) && !(STM32L061xx) */
/*---------------------------- LPTIM1 configuration ------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LPTIM1) == (RCC_PERIPHCLK_LPTIM1))
{
assert_param(IS_RCC_LPTIMCLK(PeriphClkInit->LptimClockSelection));
__HAL_RCC_LPTIM1_CONFIG(PeriphClkInit->LptimClockSelection);
}
return HAL_OK;
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
#ifndef BOARD_IN_STOP_MODE
GPIO_InitTypeDef GPIO_InitStruct;
#endif
/* STM32F0xx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 48 MHz */
SystemClock_Config();
/* Configure LED3 */
BSP_LED_Init(LED3);
#ifdef BOARD_IN_STOP_MODE
/* HSI must be UART clock source to be able to wake up the MCU */
__HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_HSI);
#endif
/*##-1- Configure the UART peripheral ######################################*/
/* Put the USART peripheral in the Asynchronous mode (UART Mode) */
/* UART configured as follows:
- Word Length = 8 Bits
- Stop Bit = One Stop bit
- Parity = None
- BaudRate = 9600 baud
- Hardware flow control disabled (RTS and CTS signals) */
UartHandle.Instance = USARTx;
HAL_UART_DeInit(&UartHandle);
UartHandle.Init.BaudRate = 9600;
UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
UartHandle.Init.StopBits = UART_STOPBITS_1;
UartHandle.Init.Parity = UART_PARITY_NONE;
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
UartHandle.Init.Mode = UART_MODE_TX_RX;
UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if(HAL_UART_Init(&UartHandle) != HAL_OK)
{
Error_Handler();
}
#ifdef BOARD_IN_STOP_MODE
BSP_LED_On(LED3);
/* wait for two seconds before test start */
HAL_Delay(2000);
/* make sure that no UART transfer is on-going */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
/* make sure that UART is ready to receive
* (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
/* set the wake-up event:
* specify wake-up on RXNE flag */
WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_READDATA_NONEMPTY;
if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
{
Error_Handler();
}
/* Enable the UART Wake UP from stop mode Interrupt */
__HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
/* about to enter stop mode: switch off LED */
BSP_LED_Off(LED3);
/* enable MCU wake-up by UART */
HAL_UARTEx_EnableStopMode(&UartHandle);
/* enter stop mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* ... STOP mode ... */
SystemClock_Config_fromSTOP();
/* at that point, MCU has been awoken: the LED has been turned back on */
/* Wake Up based on RXNE flag successful */
HAL_UARTEx_DisableStopMode(&UartHandle);
/* wait for some delay */
HAL_Delay(100);
/* Inform other board that wake up is successful */
if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer1, COUNTOF(aTxBuffer1)-1, 5000)!= HAL_OK)
{
Error_Handler();
}
/*##-2- Wake Up second step ###############################################*/
/* make sure that no UART transfer is on-going */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
/* make sure that UART is ready to receive
* (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
/* set the wake-up event:
* specify wake-up on start-bit detection */
WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_STARTBIT;
if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
{
Error_Handler();
}
/* Enable the UART Wake UP from stop mode Interrupt */
__HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
/* about to enter stop mode: switch off LED */
BSP_LED_Off(LED3);
/* enable MCU wake-up by UART */
HAL_UARTEx_EnableStopMode(&UartHandle);
/* enter stop mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* ... STOP mode ... */
SystemClock_Config_fromSTOP();
/* at that point, MCU has been awoken: the LED has been turned back on */
/* Wake Up on start bit detection successful */
HAL_UARTEx_DisableStopMode(&UartHandle);
/* wait for some delay */
HAL_Delay(100);
/* Inform other board that wake up is successful */
if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer2, COUNTOF(aTxBuffer2)-1, 5000)!= HAL_OK)
{
Error_Handler();
}
/*##-3- Wake Up third step ################################################*/
/* make sure that no UART transfer is on-going */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
/* make sure that UART is ready to receive
* (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
/* set the wake-up event:
* specify address-to-match type.
* The address is 0x29, meaning the character triggering the
* address match is 0xA9 */
WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_ADDRESS;
WakeUpSelection.AddressLength = UART_ADDRESS_DETECT_7B;
WakeUpSelection.Address = 0x29;
if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
{
Error_Handler();
}
/* Enable the UART Wake UP from stop mode Interrupt */
__HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
/* about to enter stop mode: switch off LED */
BSP_LED_Off(LED3);
/* enable MCU wake-up by UART */
HAL_UARTEx_EnableStopMode(&UartHandle);
/* enter stop mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* ... STOP mode ... */
SystemClock_Config_fromSTOP();
/* at that point, MCU has been awoken: the LED has been turned back on */
/* Wake Up on 7-bit address detection successful */
HAL_UARTEx_DisableStopMode(&UartHandle);
/* wait for some delay */
HAL_Delay(100);
/* Inform other board that wake up is successful */
if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer3, COUNTOF(aTxBuffer3)-1, 5000)!= HAL_OK)
{
Error_Handler();
}
/*##-4- Wake Up fourth step ###############################################*/
/* make sure that no UART transfer is on-going */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
/* make sure that UART is ready to receive
* (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */
while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
/* set the wake-up event:
* specify address-to-match type.
* The address is 0x2, meaning the character triggering the
* address match is 0x82 */
WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_ADDRESS;
WakeUpSelection.AddressLength = UART_ADDRESS_DETECT_4B;
WakeUpSelection.Address = 0x2;
if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
{
Error_Handler();
}
/* Enable the UART Wake UP from stop mode Interrupt */
__HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
/* about to enter stop mode: switch off LED */
BSP_LED_Off(LED3);
/* enable MCU wake-up by UART */
HAL_UARTEx_EnableStopMode(&UartHandle);
/* enter stop mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* ... STOP mode ... */
SystemClock_Config_fromSTOP();
/* at that point, MCU has been awoken: the LED has been turned back on */
/* Wake Up on 4-bit address detection successful */
/* wait for some delay */
HAL_Delay(100);
/* Inform other board that wake up is successful */
if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer4, COUNTOF(aTxBuffer4)-1, 5000)!= HAL_OK)
{
Error_Handler();
}
#else
/* Configure PA.12 (Arduino D2) as input with External interrupt */
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
/* Enable GPIOA clock */
__HAL_RCC_GPIOA_CLK_ENABLE();
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* Enable and set PA.12 (Arduino D2) EXTI Interrupt to the lowest priority */
NVIC_SetPriority((IRQn_Type)(EXTI4_15_IRQn), 0x03);
HAL_NVIC_EnableIRQ((IRQn_Type)(EXTI4_15_IRQn));
/* Wait for the user to set GPIOA to GND before starting the Communication.
In the meantime, LED3 is blinking */
while(VirtualUserButtonStatus == 0)
{
/* Toggle LED3*/
BSP_LED_Toggle(LED3);
HAL_Delay(100);
}
/*##-2- Send the wake-up from stop mode first trigger ######################*/
/* (RXNE flag setting) */
BSP_LED_On(LED3);
if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger1, COUNTOF(aWakeUpTrigger1)-1, 5000)!= HAL_OK)
{
Error_Handler();
}
/* Put UART peripheral in reception process to wait for other board
wake up confirmation */
if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer1)-1, 10000) != HAL_OK)
{
Error_Handler();
}
BSP_LED_Off(LED3);
/* Compare the expected and received buffers */
if(Buffercmp((uint8_t*)aTxBuffer1,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer1)-1))
{
Error_Handler();
}
/* wait for two seconds before test second step */
HAL_Delay(2000);
/*##-3- Send the wake-up from stop mode second trigger #####################*/
/* (start Bit detection) */
BSP_LED_On(LED3);
if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger2, COUNTOF(aWakeUpTrigger2)-1, 5000)!= HAL_OK)
{
Error_Handler();
}
/* Put UART peripheral in reception process to wait for other board
wake up confirmation */
if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer2)-1, 10000) != HAL_OK)
{
Error_Handler();
}
BSP_LED_Off(LED3);
/* Compare the expected and received buffers */
if(Buffercmp((uint8_t*)aTxBuffer2,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer2)-1))
{
Error_Handler();
}
/* wait for two seconds before test third step */
HAL_Delay(2000);
/*##-4- Send the wake-up from stop mode third trigger ######################*/
/* (7-bit address match) */
BSP_LED_On(LED3);
if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger3, 1, 5000)!= HAL_OK)
{
Error_Handler();
}
/* Put UART peripheral in reception process to wait for other board
wake up confirmation */
if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer3)-1, 10000) != HAL_OK)
{
Error_Handler();
}
BSP_LED_Off(LED3);
/* Compare the expected and received buffers */
if(Buffercmp((uint8_t*)aTxBuffer3,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer3)-1))
{
Error_Handler();
}
/* wait for two seconds before test fourth and last step */
HAL_Delay(2000);
/*##-5- Send the wake-up from stop mode fourth trigger #####################*/
/* (4-bit address match) */
BSP_LED_On(LED3);
if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger4, 1, 5000)!= HAL_OK)
{
Error_Handler();
}
/* Put UART peripheral in reception process to wait for other board
wake up confirmation */
if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer4)-1, 10000) != HAL_OK)
{
Error_Handler();
}
BSP_LED_Off(LED3);
/* Compare the expected and received buffers */
if(Buffercmp((uint8_t*)aTxBuffer4,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer4)-1))
{
Error_Handler();
}
HAL_Delay(2000);
#endif /* BOARD_IN_STOP_MODE */
/* Turn on LED3 if test passes then enter infinite loop */
BSP_LED_On(LED3);
while (1)
{
}
}
void serial_init(serial_t *obj, PinName tx, PinName rx)
{
struct serial_s *obj_s = SERIAL_S(obj);
// Determine the UART to use (UART_1, UART_2, ...)
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT(obj_s->uart != (UARTName)NC);
// Enable USART clock + switch to SystemClock
if (obj_s->uart == UART_1) {
__USART1_FORCE_RESET();
__USART1_RELEASE_RESET();
__USART1_CLK_ENABLE();
#if defined(RCC_USART1CLKSOURCE_SYSCLK)
__HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
#endif
obj_s->index = 0;
}
#if defined(USART2_BASE)
if (obj_s->uart == UART_2) {
__USART2_FORCE_RESET();
__USART2_RELEASE_RESET();
__USART2_CLK_ENABLE();
#if defined(RCC_USART2CLKSOURCE_SYSCLK)
__HAL_RCC_USART2_CONFIG(RCC_USART2CLKSOURCE_SYSCLK);
#endif
obj_s->index = 1;
}
#endif
#if defined(USART3_BASE)
if (obj_s->uart == UART_3) {
__USART3_FORCE_RESET();
__USART3_RELEASE_RESET();
__USART3_CLK_ENABLE();
#if defined(RCC_USART3CLKSOURCE_SYSCLK)
__HAL_RCC_USART3_CONFIG(RCC_USART3CLKSOURCE_SYSCLK);
#endif
obj_s->index = 2;
}
#endif
#if defined(UART4_BASE)
if (obj_s->uart == UART_4) {
__UART4_FORCE_RESET();
__UART4_RELEASE_RESET();
__UART4_CLK_ENABLE();
#if defined(RCC_UART4CLKSOURCE_SYSCLK)
__HAL_RCC_UART4_CONFIG(RCC_UART4CLKSOURCE_SYSCLK);
#endif
obj_s->index = 3;
}
#endif
#if defined(UART5_BASE)
if (obj_s->uart == UART_5) {
__HAL_RCC_UART5_FORCE_RESET();
__HAL_RCC_UART5_RELEASE_RESET();
__UART5_CLK_ENABLE();
#if defined(RCC_UART5CLKSOURCE_SYSCLK)
__HAL_RCC_UART5_CONFIG(RCC_UART5CLKSOURCE_SYSCLK);
#endif
obj_s->index = 4;
}
#endif
// Configure the UART pins
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
pin_mode(tx, PullUp);
}
if (rx != NC) {
pin_mode(rx, PullUp);
}
// Configure UART
obj_s->baudrate = 9600;
obj_s->databits = UART_WORDLENGTH_8B;
obj_s->stopbits = UART_STOPBITS_1;
obj_s->parity = UART_PARITY_NONE;
#if DEVICE_SERIAL_FC
obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
#endif
obj_s->pin_tx = tx;
obj_s->pin_rx = rx;
init_uart(obj);
// For stdio management
if (obj_s->uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
