void UART_IRQHandler(UCOM_DATA_T *pUcom )
{
uint32_t count = 0;
/* Handle transmit interrupt if enabled */
if (pUcom->selected->IER & UART_IER_THREINT) {
if (pUcom->txBuf_count > 0) {
count = Chip_UART_Send(pUcom->selected, &pUcom->txBuf[pUcom->txBuf_uartIndex], pUcom->txBuf_count);
pUcom->txBuf_count -= count;
pUcom->txBuf_uartIndex += count;
}
/* If usbRxBuf empty check if any packet pending USB EP RAM */
if (pUcom->txBuf_count < 1) {
if ((pUcom->usbRxPending > 0) && USB_IsConfigured(pUcom->hUsb)) {
pUcom->usbRxPending--;
pUcom->txBuf_count = USBD_API->hw->ReadEP(pUcom->hUsb, pUcom->outEndpoint, pUcom->txBuf);
pUcom->txBuf_uartIndex = 0;
}
else {
/* all data transmitted on UART disable UART_IER_THREINT */
Chip_UART_IntDisable(pUcom->selected, UART_IER_THREINT);
}
}
}
/* Handle receive interrupt */
count = Chip_UART_Read(pUcom->selected, &pUcom->rxBuf[pUcom->rxBuf_uartIndex], UCOM_BUF_SZ - pUcom->rxBuf_uartIndex);
if (count) {
/* Note, following logic works if UCOM_BUF_SZ is 2^n size only. */
pUcom->rxBuf_uartIndex = (pUcom->rxBuf_uartIndex + count) & (UCOM_BUF_SZ - 1);
/* If USB Tx is not busy kick start USB Tx */
if ((pUcom->usbTxBusy == 0) && USB_IsConfigured(pUcom->hUsb)) {
pUcom->usbTxBusy = 1;
count = USBD_API->hw->WriteEP(pUcom->hUsb, pUcom->inEndpoint, &pUcom->rxBuf[pUcom->rxBuf_usbIndex], count);
pUcom->rxBuf_usbIndex = (pUcom->rxBuf_usbIndex + count) & (UCOM_BUF_SZ - 1);
}
}
}
/**
* @brief UART interrupt handler sub-routine
* @return Nothing
*/
void LPC_UARTHNDLR(void)
{
uint32_t count = 0;
/* Handle transmit interrupt if enabled */
if ((Chip_UART_GetStatus(LPC_USART) & UART_STAT_TXRDY) != 0) {
if (g_uCOM.txBuf_count > 0) {
count = Chip_UART_Send(LPC_USART, &g_uCOM.txBuf[g_uCOM.txBuf_uartIndex], g_uCOM.txBuf_count);
g_uCOM.txBuf_count -= count;
g_uCOM.txBuf_uartIndex += count;
}
/* If usbRxBuf empty check if any packet pending USB EP RAM */
if (g_uCOM.txBuf_count < 1) {
if ((g_uCOM.usbRxPending > 0) && USB_IsConfigured(g_uCOM.hUsb)) {
g_uCOM.usbRxPending--;
g_uCOM.txBuf_count = USBD_API->hw->ReadEP(g_uCOM.hUsb, USB_CDC_OUT_EP, g_uCOM.txBuf);
g_uCOM.txBuf_uartIndex = 0;
}
else {
/* all data transmitted on UART disable UART_INTEN_TXRDY */
Chip_UART_IntDisable(LPC_USART, UART_INTEN_TXRDY);
}
}
}
/* Handle receive interrupt */
count = Chip_UART_Read(LPC_USART, &g_uCOM.rxBuf[g_uCOM.rxBuf_uartIndex], UCOM_BUF_SZ - g_uCOM.rxBuf_uartIndex);
if (count) {
/* Note, following logic works if UCOM_BUF_SZ is 2^n size only. */
g_uCOM.rxBuf_uartIndex = (g_uCOM.rxBuf_uartIndex + count) & (UCOM_BUF_SZ - 1);
/* If USB Tx is not busy kick start USB Tx */
if ((g_uCOM.usbTxBusy == 0) && USB_IsConfigured(g_uCOM.hUsb)) {
g_uCOM.usbTxBusy = 1;
count = USBD_API->hw->WriteEP(g_uCOM.hUsb, USB_CDC_IN_EP, &g_uCOM.rxBuf[g_uCOM.rxBuf_usbIndex], count);
g_uCOM.rxBuf_usbIndex = (g_uCOM.rxBuf_usbIndex + count) & (UCOM_BUF_SZ - 1);
}
}
}
/* Keyboard tasks */
void Keyboard_Tasks(void)
{
/* check if moue report timer expired */
if (ms_timerExpired(&g_keyBoard.tmo)) {
/* reset timer */
ms_timerStart(&g_keyBoard.tmo);
/* check device is configured before sending report. */
if ( USB_IsConfigured(g_keyBoard.hUsb)) {
/* update report based on board state */
Keyboard_UpdateReport();
/* send report data */
if (g_keyBoard.tx_busy == 0) {
g_keyBoard.tx_busy = 1;
USBD_API->hw->WriteEP(g_keyBoard.hUsb, HID_EP_IN, &g_keyBoard.report[0], KEYBOARD_REPORT_SIZE);
}
}
}
}
/* Keyboard tasks */
void Keyboard_Tasks(void)
{
/* check device is configured before sending report. */
if ( USB_IsConfigured(g_keyBoard.hUsb)) {
/* send report data */
if (g_keyBoard.tx_busy == 0) {
g_keyBoard.tx_busy = 1;
/* update report based on board state */
Keyboard_UpdateReport();
USBD_API->hw->WriteEP(g_keyBoard.hUsb, HID_EP_IN, &g_keyBoard.report[0], KEYBOARD_REPORT_SIZE);
}
}
else {
/* reset busy flag if we get disconnected. */
g_keyBoard.tx_busy = 0;
}
}
/* Mouse tasks */
void Mouse_Tasks(int leftCount, int rightCount)
{
/* check device is configured before sending report. */
if ( USB_IsConfigured(g_mouse.hUsb)) {
if (g_mouse.tx_busy == 0) {
/* update report based on board state */
Mouse_UpdateReport(leftCount, rightCount);
/* send report data */
g_mouse.tx_busy = 1;
USBD_API->hw->WriteEP(g_mouse.hUsb, HID_EP_IN, &g_mouse.report[0], MOUSE_REPORT_SIZE);
}
}
else {
/* reset busy flag if we get disconnected. */
g_mouse.tx_busy = 0;
}
}
/*********************************************************************
*
* _CmdGetConfiguration
*
* Function description
* Returns the current configuration value to the HOST. If the device
* is unconfigured then this request should return 0x00. Associated
* with the SET_CONFIGURATION request.
*
*/
static void _CmdGetConfiguration(void) {
U8 IsConfigured;
IsConfigured = USB_IsConfigured();
_WriteEP0(&IsConfigured, 1, 0);
}
