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 USART_Config(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable GPIO clock */
RCC_AHBPeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* USARTx GPIO configuration -----------------------------------------------*/
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
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;
/* When using Parity the word length must be configured to 9 bits */
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_ITConfig(USARTx, USART_IT_RXNE, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; // we want to configure the USART1 interrupts
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;// this sets the priority group of the USART1 interrupts
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; // this sets the subpriority inside the group
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; // the USART1 interrupts are globally enabled
NVIC_Init(&NVIC_InitStructure); // the properties are passed to the NVIC_Init function which takes care of the low level stuff
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
}
void USART_Config(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* USARTx GPIO configuration -----------------------------------------------*/
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN | USARTx_RX_PIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
//GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
//GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
//GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 921600; //115200;460800;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
/* When using Parity the word length must be configured to 9 bits */
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_ITConfig(USARTx, USART_IT_RXNE, ENABLE);
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
}
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 xUSART2_init(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* USARTx GPIO configuration -----------------------------------------------*/
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN | USARTx_RX_PIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
//GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
//GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
//GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
// USART_InitStructure.USART_BaudRate = 921600; //115200;460800;
USART_InitStructure.USART_BaudRate = 115200; //115200;460800;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
/* When using Parity the word length must be configured to 9 bits */
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_ITConfig(USARTx, USART_IT_RXNE, ENABLE);
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
//受信割り込みを発生させるようにする
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE); //受信割り込みを許可
/* Enable USART */
USART_Cmd(USART2, ENABLE);
USART2->CR1 |= USART_CR1_UE; // USART enable
// USART_ClearFlag(USART2,USART_FLAG_TC);
//受信バッファの初期化
gUSART2_RxWPtr=0;
gUSART2_RxRPtr=0;
gUSART2_gRxLineNum=0;
//USART2受信割り込み開始
// ena_int(USART2_IRQn+16);
NVIC_InitTypeDef NVIC_InitStructure; // this is used to configure the NVIC
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; // we want to configure the USART2 interrupts
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;// this sets the priority group of the USART2 interrupts
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; // this sets the subpriority inside the group
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; // the USART2 interrupts are globally enabled
NVIC_Init(&NVIC_InitStructure); // the properties are passed to the NVIC_Init function which takes care of the low level stuff
}
/**
* @brief Configures the USART Peripheral.
* @param None
* @retval None
*/
static void USART_Config(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* Enable the DMA clock */
RCC_AHB1PeriphClockCmd(USARTx_DMAx_CLK, ENABLE);
/* USARTx GPIO configuration -----------------------------------------------*/
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
/* USARTx configuration ----------------------------------------------------*/
/* Enable the USART OverSampling by 8 */
USART_OverSampling8Cmd(USARTx, ENABLE);
/* USARTx configured as follow:
- BaudRate = 5250000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 8
is: (USART APB Clock / 8)
Example:
- (USART3 APB1 Clock / 8) = (42 MHz / 8) = 5250000 baud
- (USART1 APB2 Clock / 8) = (84 MHz / 8) = 10500000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 16
is: (USART APB Clock / 16)
Example: (USART3 APB1 Clock / 16) = (42 MHz / 16) = 2625000 baud
Example: (USART1 APB2 Clock / 16) = (84 MHz / 16) = 5250000 baud
- Word Length = 8 Bits
- one Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = 5250000;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
/* When using Parity the word length must be configured to 9 bits */
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);
/* Configure DMA controller to manage USART TX and RX DMA request ----------*/
/* Configure DMA Initialization Structure */
DMA_InitStructure.DMA_BufferSize = BUFFERSIZE ;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable ;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull ;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single ;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_PeripheralBaseAddr =(uint32_t) (&(USARTx->DR)) ;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
/* Configure TX DMA */
DMA_InitStructure.DMA_Channel = USARTx_TX_DMA_CHANNEL ;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral ;
DMA_InitStructure.DMA_Memory0BaseAddr =(uint32_t)aTxBuffer ;
DMA_Init(USARTx_TX_DMA_STREAM,&DMA_InitStructure);
/* Configure RX DMA */
DMA_InitStructure.DMA_Channel = USARTx_RX_DMA_CHANNEL ;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory ;
DMA_InitStructure.DMA_Memory0BaseAddr =(uint32_t)aRxBuffer ;
DMA_Init(USARTx_RX_DMA_STREAM,&DMA_InitStructure);
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
}
/**
* @brief Configures the USART Peripheral.
* @param None
* @retval None
*/
static void USART_Config(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* Enable the DMA clock */
RCC_AHB1PeriphClockCmd(USARTx_DMAx_CLK, ENABLE);
/* USARTx GPIO configuration -----------------------------------------------*/
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
/* USARTx configuration ----------------------------------------------------*/
/* Enable the USART OverSampling by 8 */
USART_OverSampling8Cmd(USARTx, ENABLE);
/* USARTx configured as follow:
- BaudRate = 5250000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 8
is: (USART APB Clock / 8)
Example:
- (USART3 APB1 Clock / 8) = (42 MHz / 8) = 5250000 baud
- (USART1 APB2 Clock / 8) = (84 MHz / 8) = 10500000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 16
is: (USART APB Clock / 16)
Example: (USART3 APB1 Clock / 16) = (42 MHz / 16) = 2625000 baud
Example: (USART1 APB2 Clock / 16) = (84 MHz / 16) = 5250000 baud
- Word Length = 8 Bits
- one Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = 5250000;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
/* When using Parity the word length must be configured to 9 bits */
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);
/* Configure DMA controller to manage USART TX and RX DMA request ----------*/
DMA_InitStructure.DMA_PeripheralBaseAddr = USARTx_DR_ADDRESS;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
/* Here only the unchanged parameters of the DMA initialization structure are
configured. During the program operation, the DMA will be configured with
different parameters according to the operation phase */
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
}
/**
* @brief Configures the USART
* @param None
* @retval None
*/
static void USART_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
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;
/* When using Parity the word length must be configured to 9 bits */
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);
/* Configure DMA controller to manage USART TX and RX DMA request ----------*/
/* Enable the DMA clock */
RCC_AHB1PeriphClockCmd(USARTx_DMAx_CLK, ENABLE);
DMA_InitStructure.DMA_PeripheralBaseAddr = USARTx_DR_ADDRESS;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //DMA_Mode_Circular DMA_Mode_Normal
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
/* Here only the unchanged parameters of the DMA initialization structure are
configured. During the program operation, the DMA will be configured with
different parameters according to the operation phase */
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
/* Enable the DMA Stream IRQ Channel */
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream6_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
Zigbee_InitStructure.GPIO_Pin = GPIO_Pin_7;
Zigbee_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
Zigbee_InitStructure.GPIO_OType = GPIO_OType_PP;
Zigbee_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOD, &Zigbee_InitStructure);
GPIO_SetBits(GPIOD, GPIO_Pin_7);
}
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);
}
void bt_usart_conf(u32 br){
// GPIO_InitTypeDef GPIO_InitStructure;
// USART_InitTypeDef USART_InitStructure;
// if(br==0)br = 115200;
// /*DMA1 open*/
// RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
// /* Enable UART GPIO clocks */
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
// /* Enable UART clock */
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// //UART
// USART_InitStructure.USART_BaudRate = br;
// 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_Tx | USART_Mode_Rx;
// USART_Init(BT_USART, &USART_InitStructure);
// USART_Cmd(BT_USART,ENABLE);
// ///TX
// RCC_APB2PeriphClockCmd(UART_IO_PERIPH,ENABLE);
// GPIO_SetBits(UART_IO_PORT,UART_IO_TX);
// GPIO_InitStructure.GPIO_Pin = UART_IO_TX;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
// GPIO_Init(UART_IO_PORT, &GPIO_InitStructure);
// ///RX
// RCC_APB2PeriphClockCmd(UART_IO_PERIPH,ENABLE);
// GPIO_InitStructure.GPIO_Pin=UART_IO_RX;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
// GPIO_Init(UART_IO_PORT, &GPIO_InitStructure);
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
if(br==0)br = 115200;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* Enable the DMA clock */
RCC_AHB1PeriphClockCmd(USARTx_DMAx_CLK, ENABLE);
/* USARTx GPIO configuration -----------------------------------------------*/
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
/* USARTx configuration ----------------------------------------------------*/
/* Enable the USART OverSampling by 8 */
// USART_OverSampling8Cmd(USARTx, ENABLE);
/* USARTx configured as follows:
- BaudRate = 5250000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 8
is: (USART APB Clock / 8)
Example:
- (USART3 APB1 Clock / 8) = (42 MHz / 8) = 5250000 baud
- (USART1 APB2 Clock / 8) = (84 MHz / 8) = 10500000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 16
is: (USART APB Clock / 16)
Example: (USART3 APB1 Clock / 16) = (42 MHz / 16) = 2625000 baud
Example: (USART1 APB2 Clock / 16) = (84 MHz / 16) = 5250000 baud
- Word Length = 8 Bits
- one Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = br;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
/* When using Parity the word length must be configured to 9 bits */
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(BT_USART,ENABLE);
}
/**
* @brief Configures the USART Peripheral.
* @param None
* @retval None
*/
static void USART_Config(void)
{
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(USARTx_TX_GPIO_CLK | USARTx_RX_GPIO_CLK, ENABLE);
/* Enable USART clock */
USARTx_CLK_INIT(USARTx_CLK, ENABLE);
/* Connect USART pins to AF7 */
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 and Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = USARTx_TX_PIN;
GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = USARTx_RX_PIN;
GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStructure);
/* Enable the USART OverSampling by 8 */
USART_OverSampling8Cmd(USARTx, ENABLE);
/* USARTx configuration ----------------------------------------------------*/
/* USARTx configured as follow:
- BaudRate = 3750000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 8
is: (USART APB Clock / 8)
Example:
- (USART3 APB1 Clock / 8) = (30 MHz / 8) = 3750000 baud
- (USART1 APB2 Clock / 8) = (60 MHz / 8) = 7500000 baud
- Maximum BaudRate that can be achieved when using the Oversampling by 16
is: (USART APB Clock / 16)
Example: (USART3 APB1 Clock / 16) = (30 MHz / 16) = 1875000 baud
Example: (USART1 APB2 Clock / 16) = (60 MHz / 16) = 3750000 baud
- Word Length = 8 Bits
- one Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = 3750000;
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);
/* NVIC configuration */
/* Configure the Priority Group to 2 bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
/* Enable the USARTx Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USARTx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable USART */
USART_Cmd(USARTx, ENABLE);
}
