void EXTI4_15_IRQHandler(void)
{
if (EXTI_GetITStatus(EXTI_Line5) != RESET) {
//Check Which Pin Caused Interrupt
//USB_FLG_1 Error!!
isr_evt_set(UI_EVT_USB_OC, ui_t);
//Clear the EXTI line 5 pending bit
EXTI_ClearITPendingBit(EXTI_Line5);
}
if (EXTI_GetITStatus(EXTI_Line6) != RESET) {
//Check Which Pin Caused Interrupt
//USB_FLG_2 Error!!
isr_evt_set(UI_EVT_USB_OC, ui_t);
//Clear the EXTI line 5 pending bit
EXTI_ClearITPendingBit(EXTI_Line6);
}
if (EXTI_GetITStatus(EXTI_Line7) != RESET) {
//Check Which Pin Caused Interrupt
//Keypad line 3 event, buttons 3, 6, 8, ./
//Send event to ui task
isr_evt_set (UI_EVT_KEYPAD_3 , ui_t);
//Clear the EXTI line 7 pending bit
EXTI_ClearITPendingBit(EXTI_Line7);
}
if (EXTI_GetITStatus(EXTI_Line8) != RESET) {
//Check Which Pin Caused Interrupt
//Keypad line 2 event, buttons 2, 5, 8, 0
//Send event to ui task
isr_evt_set (UI_EVT_KEYPAD_2 , ui_t);
//Clear the EXTI line 8 pending bit
EXTI_ClearITPendingBit(EXTI_Line8);
}
if (EXTI_GetITStatus(EXTI_Line9) != RESET) {
//Check Which Pin Caused Interrupt
//Keypad line 1 event, buttons 1, 4, 7, X
//Send event to ui task
isr_evt_set (UI_EVT_KEYPAD_1 , ui_t);
//Clear the EXTI line 9 pending bit
EXTI_ClearITPendingBit(EXTI_Line9);
}
}
/****************************************************************************************************
* @fn I2C_Driver_ERR_ISR_Handler
* This function is the I2C error interrupt handler.
*
* @param none
*
* @return none
*
***************************************************************************************************/
void I2C_Driver_ERR_ISR_Handler(void)
{
__IO uint32_t SR1Register = 0;
/* Read the I2C1 status register */
SR1Register = I2C_SENSOR_BUS->SR1;
/* If AF = 1 */
if ((SR1Register & I2C_MASK_AF) == I2C_STATUS_BIT_AF)
{
I2C_SENSOR_BUS->SR1 &= (~I2C_STATUS_BIT_AF);
SR1Register = 0;
}
/* If ARLO = 1 */
if ((SR1Register & I2C_MASK_ARLO) == I2C_STATUS_BIT_ARLO)
{
I2C_SENSOR_BUS->SR1 &= (~I2C_STATUS_BIT_ARLO);
SR1Register = 0;
}
/* If BERR = 1 */
if ((SR1Register & I2C_MASK_BERR) == I2C_STATUS_BIT_BERR)
{
I2C_SENSOR_BUS->SR1 &= (~I2C_STATUS_BIT_BERR);
SR1Register = 0;
}
/* If OVR = 1 */
if ((SR1Register & I2C_MASK_OVR) == I2C_STATUS_BIT_OVR)
{
I2C_SENSOR_BUS->SR1 &= (~I2C_STATUS_BIT_OVR);
SR1Register = 0;
}
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_FAILED;
isr_evt_set(I2C_TXRX_STATUS_FAILED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
}
void FLEX_INT0_IRQHandler() {
isr_evt_set(isr_flags, isr_notify);
NVIC_DisableIRQ(FLEX_INT0_IRQn);
// ack interrupt
LPC_GPIO_PIN_INT->IST = 0x01;
}
/*******************************************************************************
* Function Name : uart_irq_handler
* Description : Interrupt handle function
* Input : - Uart: Select the USART or the UART peripheral.
* Output : None
* Return : None
*******************************************************************************/
void uart_irq_handler(const _Uart_Descriptor *Uart)
{
//
__hw_enter_interrupt();
//
if (*Uart->Ctrl && (*Uart->Ctrl)->DmaBufSize)
{
if (USART_GetITStatus(Uart->UARTx, USART_IT_IDLE) != RESET) // Idle line
{
NVIC_SetPendingIRQ(Uart->DMAx_IRQn);
USART_ReceiveData(Uart->UARTx);
}
}
else if (USART_GetITStatus(Uart->UARTx, USART_IT_RXNE) != RESET) // Received Data Ready to be Read
{
if (*Uart->Ctrl && ((*Uart->Ctrl)->RxCnt < (*Uart->Ctrl)->RxBufSize))
{
(*Uart->Ctrl)->RxBufPtr[(*Uart->Ctrl)->RxiPut++] = (char)USART_ReceiveData(Uart->UARTx);
//lepton
if(!(*Uart->Ctrl)->RxCnt){
if(Uart->board_uart_info && Uart->board_uart_info->desc_r!=-1)
__fire_io_int(ofile_lst[Uart->board_uart_info->desc_r].owner_pthread_ptr_read);
}
//lepton
(*Uart->Ctrl)->RxCnt++;
if ((*Uart->Ctrl)->RxiPut >= (*Uart->Ctrl)->RxBufSize) (*Uart->Ctrl)->RxiPut = 0;
if (((*Uart->Ctrl)->HwCtrl & UART_HW_FLOW_CTRL_RX) && ((*Uart->Ctrl)->RxCnt > ((*Uart->Ctrl)->RxBufSize - (*Uart->Ctrl)->DmaBufSize))) uart_set_rx_hw_fc(Uart);
}
else USART_ClearITPendingBit(Uart->UARTx, USART_IT_RXNE);
#ifdef _UART_OS_SUPPORT
isr_evt_set((*Uart->Ctrl)->Event, (*Uart->Ctrl)->Task);
#endif
}
if (USART_GetITStatus(Uart->UARTx, USART_IT_TXE) != RESET) // Transmit Data Register Empty
{
if (*Uart->Ctrl && (*Uart->Ctrl)->TxCnt)
{
USART_SendData(Uart->UARTx, (*Uart->Ctrl)->TxBufPtr[(*Uart->Ctrl)->TxiGet++]);
(*Uart->Ctrl)->TxCnt--;
if ((*Uart->Ctrl)->TxiGet >= (*Uart->Ctrl)->TxBufSize) (*Uart->Ctrl)->TxiGet = 0;
}
else{
USART_ITConfig(Uart->UARTx, USART_IT_TXE, DISABLE);
//lepton
if(Uart->board_uart_info && Uart->board_uart_info->desc_w!=-1)
__fire_io_int(ofile_lst[Uart->board_uart_info->desc_w].owner_pthread_ptr_write);
//lepton
}
}
if (USART_GetITStatus(Uart->UARTx, USART_IT_TC) != RESET) // Transmission complete
{
if (*Uart->Ctrl && ((*Uart->Ctrl)->HwCtrl & UART_HALF_DUPLEX))
uart_tx_disable(Uart);
USART_ClearITPendingBit(Uart->UARTx, USART_IT_TC);
}
//
__hw_leave_interrupt();
}
/*******************************************************************************
* Function Name : uart_dma_irq_handler
* Description : DMA interrupt handle function
* Input : - Uart: Select the USART or the UART peripheral.
* Output : None
* Return : None
*******************************************************************************/
void uart_dma_irq_handler(const _Uart_Descriptor *Uart)
{
//
__hw_enter_interrupt();
//
if (*Uart->Ctrl)
{
while ((DMA_GetCurrDataCounter(Uart->DMAy_Streamx) != (*Uart->Ctrl)->iDma) && ((*Uart->Ctrl)->RxCnt < (*Uart->Ctrl)->RxBufSize))
{
(*Uart->Ctrl)->RxBufPtr[(*Uart->Ctrl)->RxiPut++] = (*Uart->Ctrl)->DmaBufPtr[(*Uart->Ctrl)->DmaBufSize - (*Uart->Ctrl)->iDma--];
if (!(*Uart->Ctrl)->iDma) (*Uart->Ctrl)->iDma = (*Uart->Ctrl)->DmaBufSize;
//lepton
if(!(*Uart->Ctrl)->RxCnt){
if(Uart->board_uart_info && Uart->board_uart_info->desc_r!=-1)
__fire_io_int(ofile_lst[Uart->board_uart_info->desc_r].owner_pthread_ptr_read);
}
//lepton
(*Uart->Ctrl)->RxCnt++;
if ((*Uart->Ctrl)->RxiPut >= (*Uart->Ctrl)->RxBufSize) (*Uart->Ctrl)->RxiPut = 0;
if (((*Uart->Ctrl)->HwCtrl & UART_HW_FLOW_CTRL_RX) && ((*Uart->Ctrl)->RxCnt > ((*Uart->Ctrl)->RxBufSize - (*Uart->Ctrl)->DmaBufSize))) uart_set_rx_hw_fc(Uart);
}
}
#ifdef _UART_OS_SUPPORT
isr_evt_set((*Uart->Ctrl)->Event, (*Uart->Ctrl)->Task);
#endif
//
DMA_ClearITPendingBit(Uart->DMAy_Streamx, DMA_IT_ALL_1);
//
__hw_leave_interrupt();
//
}
void DMA1_Channel1_IRQHandler(void)
{
if(DMA_GetITStatus(DMA1_IT_TC1))
{
DMA_ClearITPendingBit(DMA1_IT_GL1);
isr_evt_set(EVT_ADC_DONE, tid_conflict_monitor);
}
}
int32_t LLMJVM_IMPL_wakeupVM(void){
if(isInInterrupt())
isr_evt_set(LLMJVM_RTX_EVT_WAKEUP, LLMJVM_RTX_taskID);
else
os_evt_set(LLMJVM_RTX_EVT_WAKEUP, LLMJVM_RTX_taskID);
LLMJVM_RTX_nextWakeupTime = INT64_MAX;
return LLMJVM_OK;
}
uint32_t osThreadFlagsSet(osThreadId_t thread_id, uint32_t flags)
{
if (cortex_in_isr()){
isr_evt_set(flags, (OS_TID)thread_id);
}else {
os_evt_set(flags, (OS_TID)thread_id);
}
return flags;
}
void EXTI0_1_IRQHandler(void)
{
if (EXTI_GetITStatus(EXTI_Line0) != RESET) {
//Check Which Pin Caused Interrupt
//Only PA0 configures
//Temp: Use switch as Reset Switch
//NVIC_SystemReset();
//Send event to ui task
isr_evt_set (UI_PWR_SW , ui_t);
//Clear the EXTI line 0 pending bit
EXTI_ClearITPendingBit(EXTI_Line0);
}
}
void DMA0_IRQHandler(void) {
// Light green LED in DMA IRQ handler
Control_RGB_LEDs(0,1,0);
NVIC_ClearPendingIRQ(DMA0_IRQn);
// Clear done flag
DMA0->DMA[0].DSR_BCR |= DMA_DSR_BCR_DONE_MASK;
#if 1 // under development for continuous playback
// Signal event requesting source buffer refill
isr_evt_set(EV_REFILL_SOUND, t_Refill_Sound_Buffer);
// Start playback again
Start_DMA_Playback();
#else
// Disable DMA
DMAMUX0->CHCFG[0] &= ~DMAMUX_CHCFG_ENBL_MASK;
#endif
Control_RGB_LEDs(0,0,0);
}
void USBD_Handler(void)
{
uint32_t irq_flags;
unsigned int ep;
uint32_t ep_int, mask;
// Read and clear interrupts
irq_flags = MXC_USB->dev_intfl;
MXC_USB->dev_intfl = irq_flags;
/* reset interrupt */
if (irq_flags & MXC_F_USB_DEV_INTFL_BRST) {
if (suspended) {
suspended = 0;
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_RESUME, USBD_RTX_DevTask);
}
#else
if (USBD_P_Resume_Event) {
USBD_P_Resume_Event();
}
#endif
}
reset_state();
usbd_reset_core();
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_RESET, USBD_RTX_DevTask);
}
#else
if (USBD_P_Reset_Event) {
USBD_P_Reset_Event();
}
#endif
}
/* reset done interrupt */
if (irq_flags & MXC_F_USB_DEV_INTFL_BRST_DN) {
reset_state();
}
/* suspend interrupt */
if (irq_flags & MXC_F_USB_DEV_INTFL_SUSP) {
suspended = 1;
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_SUSPEND, USBD_RTX_DevTask);
}
#else
if (USBD_P_Suspend_Event) {
USBD_P_Suspend_Event();
}
#endif
}
if (irq_flags & MXC_F_USB_DEV_INTFL_VBUS) {
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_POWER_ON, USBD_RTX_DevTask);
}
#else
if (USBD_P_Power_Event) {
USBD_P_Power_Event(1);
}
#endif
}
if (irq_flags & MXC_F_USB_DEV_INTFL_NO_VBUS) {
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_POWER_OFF, USBD_RTX_DevTask);
}
#else
if (USBD_P_Power_Event) {
USBD_P_Power_Event(0);
}
#endif
}
if (irq_flags & MXC_F_USB_DEV_INTFL_SETUP) {
setup_waiting = 1;
#ifdef __RTX
if (USBD_RTX_EPTask[0]) {
isr_evt_set(USBD_EVT_SETUP, USBD_RTX_EPTask[0]);
}
#else
if (USBD_P_EP[0]) {
USBD_P_EP[0](USBD_EVT_SETUP);
}
#endif
}
if (irq_flags & MXC_F_USB_DEV_INTFL_EP_IN) {
// Read and clear endpoint interrupts
ep_int = MXC_USB->in_int;
MXC_USB->in_int = ep_int;
mask = 1;
for (ep = 0; ep < MXC_USB_NUM_EP; ep++) {
if (ep_int & mask) {
#ifdef __RTX
if (USBD_RTX_EPTask[ep]) {
isr_evt_set(USBD_EVT_IN, USBD_RTX_EPTask[ep]);
}
#else
if (USBD_P_EP[ep]) {
USBD_P_EP[ep](USBD_EVT_IN);
}
#endif
}
mask <<= 1;
}
}
if (irq_flags & MXC_F_USB_DEV_INTFL_EP_OUT) {
// Read and clear endpoint interrupts
ep_int = MXC_USB->out_int;
MXC_USB->out_int = ep_int;
mask = 1;
for (ep = 0; ep < MXC_USB_NUM_EP; ep++) {
if (ep_int & mask) {
#ifdef __RTX
if (USBD_RTX_EPTask[ep]) {
isr_evt_set(USBD_EVT_OUT, USBD_RTX_EPTask[ep]);
}
#else
if (USBD_P_EP[ep]) {
USBD_P_EP[ep](USBD_EVT_OUT);
}
#endif
}
mask <<= 1;
}
}
if (irq_flags & MXC_F_USB_DEV_INTFL_DMA_ERR) {
// Read and clear endpoint interrupts
ep_int = MXC_USB->dma_err_int;
MXC_USB->dma_err_int = ep_int;
while(1); // not recoverable
}
NVIC_EnableIRQ(USB_IRQn);
}
void USART3_IRQHandler(void)
{
receivedData=USART3->DR;
isr_evt_set(0x01,t_UsartTask);
}
void USBD_SignalHandler()
{
isr_evt_set(FLAGS_MAIN_PROC_USB, main_task_id);
}
/****************************************************************************************************
* @fn I2C_IRQHandler
* Handler for I2C Tx/Rx related interrupt
*
***************************************************************************************************/
void I2C_IRQHandler(LPC_I2C_T *pI2C)
{
uint32_t status = Chip_I2CM_GetStatus(pI2C);
uint32_t i2cmststate = Chip_I2CM_GetMasterState(pI2C); /* Only check Master and Slave State */
uint32_t mstCtrl = I2C_MSTCTL_MSTCONTINUE;
if ( status & I2C_STAT_MSTRARBLOSS )
{
/* Master Lost Arbitration */
/* Clear Status Flags */
Chip_I2CM_ClearStatus(pI2C, I2C_STAT_MSTRARBLOSS);
/* Master continue */
if ( status & I2C_STAT_MSTPENDING ) {
pI2C->MSTCTL = I2C_MSTCTL_MSTCONTINUE;
}
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_FAILED;
isr_evt_set(I2C_TXRX_STATUS_FAILED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
D0_printf("I2C-ISR: Arb Loss Err!\r\n");
}
else if ( status & I2C_STAT_MSTSTSTPERR )
{
/* Master Start Stop Error */
/* Clear Status Flags */
Chip_I2CM_ClearStatus(pI2C, I2C_STAT_MSTSTSTPERR);
/* Master continue */
if ( status & I2C_STAT_MSTPENDING ) {
pI2C->MSTCTL = I2C_MSTCTL_MSTCONTINUE;
}
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_FAILED;
isr_evt_set(I2C_TXRX_STATUS_FAILED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
D0_printf("I2C-ISR: Start Stop Err!\r\n");
}
else if ( status & I2C_STAT_MSTPENDING )
{
pI2C->INTENCLR = I2C_STAT_MSTPENDING;
/* Below five states are for Master mode: IDLE, TX, RX, NACK_ADDR, NAC_TX.
IDLE is not under consideration for now. */
switch ( i2cmststate )
{
case I2C_STAT_MSTCODE_IDLE:
/* Do not send the message to the waiting task until we are done with the transaction */
if ((asyncXfer.i2c_txrx_status == I2C_TXRX_STATUS_ACTIVE) && (asyncXfer.num == 0)) {
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_PASSED;
isr_evt_set(I2C_TXRX_STATUS_PASSED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
}
break;
/* Received data. Address plus Read was previously sent and Acknowledged by slave */
case I2C_STAT_MSTCODE_RXREADY:
asyncXfer.pData[asyncXfer.byte_index++] = pI2C->MSTDAT;
asyncXfer.num--;
if (asyncXfer.num == 0) { //we are done with the read
mstCtrl |= I2C_MSTCTL_MSTSTOP;
}
pI2C->MSTCTL = mstCtrl;
pI2C->INTENSET = I2C_STAT_MSTPENDING;
break;
/* Ready to Transmit data. Address plus Write was previously sent and Acknowledged by slave */
case I2C_STAT_MSTCODE_TXREADY:
if (i2c_mode == I2C_MASTER_WRITE) {
if (asyncXfer.i2c_txrx_phase == 0) {
pI2C->MSTDAT = asyncXfer.i2c_slave_reg; //Send register addr
asyncXfer.i2c_txrx_phase = 1;
} else {
if (asyncXfer.num == 0) { //Done with write transaction
mstCtrl |= I2C_MSTCTL_MSTSTOP;
} else {
pI2C->MSTDAT = asyncXfer.pData[asyncXfer.byte_index++];
asyncXfer.num--;
}
}
pI2C->MSTCTL = mstCtrl;
pI2C->INTENSET = I2C_STAT_MSTPENDING;
} else { // MASTER_READ
if (asyncXfer.i2c_txrx_phase == 0) {
pI2C->MSTDAT = asyncXfer.i2c_slave_reg; //Send register addr
asyncXfer.i2c_txrx_phase = 1;
} else { //Send Re-Start with SLA+R
pI2C->MSTDAT = asyncXfer.i2c_slave_addr | 1;
mstCtrl |= I2C_MSTCTL_MSTSTART;
}
}
pI2C->MSTCTL = mstCtrl;
pI2C->INTENSET = I2C_STAT_MSTPENDING;
break;
case I2C_STAT_MSTCODE_NACKADR: //Slave NACKed address
/* For now just stop the transaction */
pI2C->MSTCTL = I2C_MSTCTL_MSTSTOP | I2C_MSTCTL_MSTCONTINUE;
pI2C->INTENSET = I2C_STAT_MSTPENDING;
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_FAILED;
isr_evt_set(I2C_TXRX_STATUS_FAILED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
D0_printf("I2C-ISR: Slave NACKed Addr!\r\n");
break;
default:
case I2C_STAT_MSTCODE_NACKDAT: //Slave NACKed transmitted data
/* For now just stop the transaction */
pI2C->MSTCTL = I2C_MSTCTL_MSTSTOP | I2C_MSTCTL_MSTCONTINUE;
pI2C->INTENSET = I2C_STAT_MSTPENDING;
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_FAILED;
isr_evt_set(I2C_TXRX_STATUS_FAILED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
D0_printf("I2C-ISR: Slave NACKed Data!\r\n");
break;
}
}
}
/****************************************************************************************************
* @fn I2C_Driver_ISR_Handler
* This function is the Interrupt Service Routine (ISR), and called when the I2C interrupt
* is triggered; that is whenever a I2C event has occurred.
*
* @param none
*
* @return none
*
***************************************************************************************************/
void I2C_Driver_ISR_Handler(void)
{
__IO uint32_t SR1Register = 0;
__IO uint32_t SR2Register = 0;
/* Read the I2C SR1 and SR2 status registers */
SR1Register = I2C_SENSOR_BUS->SR1;
SR2Register = I2C_SENSOR_BUS->SR2;
/* If SB = 1, I2C master sent a START on the bus (EV5) or ReSTART in case of receive */
if ((SR1Register & I2C_MASK_SB) == I2C_STATUS_BIT_SB)
{
/* Send the slave address for transmssion or for reception (according to the configured value
in the write master write routine */
if (gSendMode == I2C_MASTER_RESTART)
{
I2C_SENSOR_BUS->DR = asyncXfer.i2c_slave_addr | 0x01; //Set read bit
//After this we just wait for RXNE interrupts to read data
}
else
{
I2C_SENSOR_BUS->DR = asyncXfer.i2c_slave_addr;
//I2C_msgSize--;
}
SR1Register = 0;
SR2Register = 0;
}
//if ((SR2Register & I2C_MASK_MSL) == I2C_STATUS_BIT_MASTER)
{
/* If ADDR = 1, EV6 */
if ((SR1Register & I2C_MASK_ADDR) == I2C_STATUS_BIT_ADDR)
{
if (gSendMode != I2C_MASTER_RESTART)
{
/* Write the device register address */
I2C_SENSOR_BUS->DR = asyncXfer.i2c_slave_reg;
//I2C_msgSize--;
/* If this is receive mode then program start bit here so that repeat start will be generated as soon as
ACK is received */
if (gSendMode == I2C_MASTER_READ)
{
gSendMode = I2C_MASTER_RESTART;
I2C_SENSOR_BUS->CR1 |= CR1_START_Set;
}
/* If no further data to be sent, disable the I2C BUF IT
in order to not have a TxE interrupt */
if (asyncXfer.num == 0)
{
I2C_SENSOR_BUS->CR2 &= (uint16_t)~I2C_IT_BUF; //This will ensure interrupt only when BTF is set (EV8_2)
}
}
else if (asyncXfer.num == 1)
{
/* Clear ACK */
I2C_SENSOR_BUS->CR1 &= CR1_ACK_Reset;
/* Program the STOP */
I2C_SENSOR_BUS->CR1 |= CR1_STOP_Set;
}
SR1Register = 0;
SR2Register = 0;
}
/* Master transmits the remaing data: from data2 until the last one. */
/* If TXE is set (EV_8) */
if ((SR1Register & I2C_MASK_TXE_BTF) == I2C_STATUS_BIT_TXE)
{
if (gSendMode == I2C_MASTER_WRITE)
{
/* If there is still data to write */
if (asyncXfer.num != 0)
{
/* Write the data in DR register */
I2C_SENSOR_BUS->DR = asyncXfer.pData[asyncXfer.byte_index++];
/* Decrment the number of data to be written */
asyncXfer.num--;
/* If no data remains to write, disable the BUF IT in order
to not have again a TxE interrupt. */
if (asyncXfer.num == 0)
{
/* Disable the BUF IT */
I2C_SENSOR_BUS->CR2 &= (uint16_t)~I2C_IT_BUF; //This ensures BTF interrupt (EV8_2)
}
}
}
SR1Register = 0;
SR2Register = 0;
}
/* If BTF and TXE are set (EV8_2), program the STOP */
if ((SR1Register & I2C_MASK_TXE_BTF) == (I2C_STATUS_BIT_TXE | I2C_STATUS_BIT_BTF))
{
if (gSendMode == I2C_MASTER_WRITE)
{
/* Program the STOP */
I2C_SENSOR_BUS->CR1 |= CR1_STOP_Set;
/* Disable EVT IT In order to not have again a BTF IT */
I2C_SENSOR_BUS->CR2 &= (uint16_t)~I2C_IT_EVT;
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_PASSED;
isr_evt_set(I2C_TXRX_STATUS_PASSED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
}
SR1Register = 0;
SR2Register = 0;
}
/* If RXNE is set */
if ((SR1Register & I2C_MASK_RXNE) == I2C_STATUS_BIT_RXNE)
{
if (asyncXfer.num == 0) //received all expected data
{
/* Disable the BUF IT */
I2C_SENSOR_BUS->CR2 &= (uint16_t)~I2C_IT_BUF;
/* Indicate that we are done receiving */
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_PASSED;
isr_evt_set(I2C_TXRX_STATUS_PASSED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
}
else
{
/* Read the data register */
asyncXfer.pData[asyncXfer.byte_index++] = I2C_SENSOR_BUS->DR;
/* Decrement the number of bytes to be read */
asyncXfer.num--;
/* If it remains only one byte to read, disable ACK and program the STOP (EV7_1) */
if (asyncXfer.num == 1)
{
/* Clear ACK */
I2C_SENSOR_BUS->CR1 &= CR1_ACK_Reset;
/* Program the STOP */
I2C_SENSOR_BUS->CR1 |= CR1_STOP_Set;
}
if (asyncXfer.num == 0) //received all expected data
{
/* Disable the BUF IT */
I2C_SENSOR_BUS->CR2 &= (uint16_t)~I2C_IT_BUF;
/* Indicate that we are done receiving */
asyncXfer.i2c_txrx_status = I2C_TXRX_STATUS_PASSED;
isr_evt_set(I2C_TXRX_STATUS_PASSED, asfTaskHandleTable[SENSOR_ACQ_TASK_ID].handle );
}
}
SR1Register = 0;
SR2Register = 0;
}
}
}
void USB_LP_CAN1_RX0_IRQHandler(void) {
U32 istr, num, val;
istr = ISTR;
/* USB Reset Request */
if (istr & ISTR_RESET) {
USBD_Reset();
usbd_reset_core();
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_RESET, USBD_RTX_DevTask);
}
#else
if (USBD_P_Reset_Event) {
USBD_P_Reset_Event();
}
#endif
ISTR = ~ISTR_RESET;
}
/* USB Suspend Request */
if (istr & ISTR_SUSP) {
USBD_Suspend();
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_SUSPEND, USBD_RTX_DevTask);
}
#else
if (USBD_P_Suspend_Event) {
USBD_P_Suspend_Event();
}
#endif
ISTR = ~ISTR_SUSP;
}
/* USB Wakeup */
if (istr & ISTR_WKUP) {
USBD_WakeUp();
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_RESUME, USBD_RTX_DevTask);
}
#else
if (USBD_P_Resume_Event) {
USBD_P_Resume_Event();
}
#endif
ISTR = ~ISTR_WKUP;
}
/* Start of Frame */
if (istr & ISTR_SOF) {
#ifdef __RTX
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_SOF, USBD_RTX_DevTask);
}
#else
if (USBD_P_SOF_Event) {
USBD_P_SOF_Event();
}
#endif
ISTR = ~ISTR_SOF;
}
/* PMA Over/underrun */
if (istr & ISTR_PMAOVR) {
#ifdef __RTX
LastError = 2;
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_ERROR, USBD_RTX_DevTask);
}
#else
if (USBD_P_Error_Event) {
USBD_P_Error_Event(2);
}
#endif
ISTR = ~ISTR_PMAOVR;
}
/* Error: No Answer, CRC Error, Bit Stuff Error, Frame Format Error */
if (istr & ISTR_ERR) {
#ifdef __RTX
LastError = 1;
if (USBD_RTX_DevTask) {
isr_evt_set(USBD_EVT_ERROR, USBD_RTX_DevTask);
}
#else
if (USBD_P_Error_Event) {
USBD_P_Error_Event(1);
}
#endif
ISTR = ~ISTR_ERR;
}
/* Endpoint Interrupts */
while ((istr = ISTR) & ISTR_CTR) {
ISTR = ~ISTR_CTR;
num = istr & ISTR_EP_ID;
val = EPxREG(num);
if (val & EP_CTR_RX) {
EPxREG(num) = val & ~EP_CTR_RX & EP_MASK;
#ifdef __RTX
if (USBD_RTX_EPTask[num]) {
isr_evt_set((val & EP_SETUP) ? USBD_EVT_SETUP : USBD_EVT_OUT, USBD_RTX_EPTask[num]);
}
#else
if (USBD_P_EP[num]) {
USBD_P_EP[num]((val & EP_SETUP) ? USBD_EVT_SETUP : USBD_EVT_OUT);
}
#endif
}
if (val & EP_CTR_TX) {
EPxREG(num) = val & ~EP_CTR_TX & EP_MASK;
#ifdef __RTX
if (USBD_RTX_EPTask[num]) {
isr_evt_set(USBD_EVT_IN, USBD_RTX_EPTask[num]);
}
#else
if (USBD_P_EP[num]) {
USBD_P_EP[num](USBD_EVT_IN);
}
#endif
}
}
}
/****************************************************************************************************
* @fn I2C_Slave_Handler
* Handles the I2C Slave communication events
*
***************************************************************************************************/
void I2C_Slave_Handler(I2C_TypeDef *pI2C, uint8_t irqCh)
{
uint32_t i2cslvstate = I2C_GetLastEvent(pI2C);
uint8_t slvRxData;
/* If error event - clear it */
if ((irqCh == I2C_SLAVE_BUS_ERROR_IRQ_CH) && ((i2cslvstate & 0xFF00) != 0))
{
pI2C->SR1 &= 0x00FF;
if ((i2cslvstate & 0xFF00) == I2C_EVENT_SLAVE_ACK_FAILURE)
{
/* Master NAKed - this was end of transaction when slave is transmitting */
isr_evt_set(I2C_SLAVE_XFER_DONE, asfTaskHandleTable[I2CSLAVE_COMM_TASK_ID].handle );
slave_xfer.rxCnt = 0;
return;
}
}
/* Below three states are for Slave mode: Address Received, TX, and RX. */
switch ( i2cslvstate )
{
case I2C_EVENT_SLAVE_BYTE_RECEIVED: /* 00020040 */
case (I2C_EVENT_SLAVE_BYTE_RECEIVED | I2C_SR1_BTF):
SensorHubIntLow(); //Deassert Interrupt
slvRxData = (uint8_t)I2C_ReceiveData(pI2C);
slave_xfer.rxCnt++;
if (slave_xfer.rxCnt == 1) //First byte received must be the register address
{
switch (slvRxData)
{
case SH_REG_IRQ_CAUSE:
slave_xfer.txBuff = &SlaveRegMap.irq_cause;
slave_xfer.txSz = TX_LENGTH;
slave_xfer.txCnt = 0;
break;
case SH_REG_RD_LEN:
slave_xfer.txBuff = &SlaveRegMap.read_len;
slave_xfer.txSz = TX_LENGTH;
slave_xfer.txCnt = 0;
break;
case SH_REG_ACK:
//TODO -- Need to define state machine logic that would handle ACK
break;
case SH_REG_REQUEST:
//TODO
break;
case SH_REG_WHO_AM_I:
slave_xfer.txBuff = &SlaveRegMap.whoami;
slave_xfer.txSz = TX_LENGTH;
slave_xfer.txCnt = 0;
break;
case SH_REG_VERSION0:
slave_xfer.txBuff = &SlaveRegMap.version0;
slave_xfer.txSz = TX_LENGTH;
slave_xfer.txCnt = 0;
break;
case SH_REG_VERSION1:
slave_xfer.txBuff = &SlaveRegMap.version1;
slave_xfer.txSz = TX_LENGTH;
slave_xfer.txCnt = 0;
break;
case SH_REG_RD_MEM:
slave_xfer.txBuff = &SlaveRegMap.rd_mem[0];
slave_xfer.txSz = SlaveRegMap.read_len;
slave_xfer.txCnt = 0;
break;
case SH_REG_WR_MEM:
default:
//Not supported at this time so just NACK it for now
I2C_AcknowledgeConfig(pI2C, DISABLE);
break;
case 0xEE: //Ack write
//Ack is ignored for now
break;
}
}
else
{
//TODO Implement host command functions
}
break;
case I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED: /* 00060082 */
slave_xfer.rxCnt = 0; /* I2C Read Mode - no more receive */
/* Fall thru */
case I2C_EVENT_SLAVE_BYTE_TRANSMITTING: /* 00060080 */
case I2C_EVENT_SLAVE_BYTE_TRANSMITTED:
case 0x00060004: //Sometimes we get this event and the driver is stuck in ISR!
/* In transmit we will do not want to send data beyond the register set */
if (&slave_xfer.txBuff[slave_xfer.txCnt] < &SlaveRegMap.endMarker)
{
I2C_SendData(pI2C, slave_xfer.txBuff[slave_xfer.txCnt++]);
}
else
{
I2C_SendData(pI2C, I2C_OVERREACH_VAL); //This value signifies read beyond allowed range
}
break;
case I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED: /* 00020002 */
/* Nothing to do except continue */
break;
case I2C_EVENT_SLAVE_STOP_DETECTED: /* This is end of transaction when slave is receiving */
/* if (STOPF==1) Read SR1;Write CR1 */
I2C_GetFlagStatus(pI2C, I2C_FLAG_STOPF);
I2C_Cmd(pI2C, ENABLE);
isr_evt_set(I2C_SLAVE_XFER_DONE, asfTaskHandleTable[I2CSLAVE_COMM_TASK_ID].handle );
slave_xfer.rxCnt = 0;
/* Re-enable ACK (in case it was disabled) */
I2C_AcknowledgeConfig(pI2C, ENABLE);
break;
default:
break;
}
}