void Rx_irq_handler(void *arg)
{
init_clocks();
GPIO_CLK_INIT(USARTx_RX_GPIO_CLK, ENABLE);
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
RCC_AHB1PeriphClockCmd(DMA_CLK_INIT,ENABLE);
gpio_irq_disable(USARTx_RX_GPIO_PORT, USARTx_IRQ_PIN);
mico_mcu_powersave_config(mxDisable);
mico_rtos_set_semaphore(&wakeup);
}
void UART_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
GPIO_CLK_INIT(USARTx_RX_GPIO_CLK, ENABLE);
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* Configure USART pin*/
GPIO_PinAFConfig(USARTx_TX_GPIO_PORT, USARTx_TX_SOURCE, USARTx_TX_AF);
GPIO_PinAFConfig(USARTx_RX_GPIO_PORT, USARTx_RX_SOURCE, USARTx_RX_AF);
/* Configure USART Tx as alternate function */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
/* Configure USART Rx as alternate function */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1 ;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USARTx, &USART_InitStructure);
USART_Cmd(USARTx, ENABLE);
}
void UART_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
mico_rtos_init_semaphore(&tx_complete, 1);
mico_rtos_init_semaphore(&rx_complete, 1);
sem_init = 1;
mico_mcu_powersave_config(mxDisable);
rx_buffer.buffer = rx_data;
rx_buffer.size = RX_BUFFER_SIZE;
rx_buffer.head = 0;
rx_buffer.tail = 0;
GPIO_CLK_INIT(USARTx_RX_GPIO_CLK, ENABLE);
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
RCC_AHB1PeriphClockCmd(DMA_CLK_INIT,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = UART_TX_DMA_Stream_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 5;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 8;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = USARTx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = (uint8_t) 0x6;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x7;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init( &NVIC_InitStructure );
/* Configure USART pin*/
GPIO_PinAFConfig(USARTx_TX_GPIO_PORT, USARTx_TX_SOURCE, USARTx_TX_AF);
GPIO_PinAFConfig(USARTx_RX_GPIO_PORT, USARTx_RX_SOURCE, USARTx_RX_AF);
/* Configure USART Tx as alternate function */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
/* Configure USART Rx as alternate function */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
#ifdef MCULowPowerMode
gpio_irq_enable(USARTx_RX_GPIO_PORT, USARTx_IRQ_PIN, IRQ_TRIGGER_FALLING_EDGE, Rx_irq_handler, 0);
mico_rtos_init_semaphore(&wakeup, 1);
mico_rtos_create_thread(&uart_wakeup_thread_handler, MICO_APPLICATION_PRIORITY, "UART_WAKEUP", uart_wakeup_thread, 0x500, NULL );
#endif
USART_DeInit(USARTx);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1 ;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USARTx, &USART_InitStructure);
USART_Cmd(USARTx, ENABLE);
USART_DMACmd(USARTx, USART_DMAReq_Rx | USART_DMAReq_Tx, ENABLE);
DMA_DeInit( UART_RX_DMA_Stream );
DMA_InitStructure.DMA_PeripheralBaseAddr = USARTx_DR_Base;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_InitStructure.DMA_Channel = DMA_Channel_4;
DMA_InitStructure.DMA_BufferSize = 0;
DMA_Init(UART_RX_DMA_Stream, &DMA_InitStructure);
platform_uart_receive_bytes( rx_buffer.buffer, rx_buffer.size);
mico_mcu_powersave_config(mxEnable);
}
