- /******************************************************************************
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * @brief
- * This sample code supports to use GPIO to simulate key input.
- * @note
- * Copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
- ******************************************************************************/
- #include <stdio.h>
- #include "NUC122.h"
- #include "hid.h"
- #include "string.h"
- #include "usbd_user.h"
- /*--------------------------------------------------------------------------*/
- extern uint8_t volatile g_u8Suspend;
- uint8_t volatile g_u8EP2Ready = 0;
- uint8_t volatile g_u8EP3Ready = 0;
- void SYS_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Enable Internal RC 22.1184MHz clock */
- CLK_EnableXtalRC(CLK_PWRCON_OSC22M_EN_Msk);
- /* Waiting for Internal RC clock ready */
- CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk);
- /* Switch HCLK clock source to Internal RC and HCLK source divide 1 */
- CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HIRC, CLK_CLKDIV_HCLK(1));
- /* Enable external XTAL 12MHz clock */
- CLK_EnableXtalRC(CLK_PWRCON_XTL12M_EN_Msk);
- /* Waiting for external XTAL clock ready */
- CLK_WaitClockReady(CLK_CLKSTATUS_XTL12M_STB_Msk);
- /* Set core clock */
- CLK_SetCoreClock(48000000);
- /* Enable module clock */
- CLK_EnableModuleClock(UART0_MODULE);
- CLK_EnableModuleClock(USBD_MODULE);
- /* Select module clock source */
- CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_CLKDIV_UART(1));
- CLK_SetModuleClock(USBD_MODULE, 0, CLK_CLKDIV_USB(2));
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set GPB multi-function pins for UART0 RXD and TXD */
- SYS->GPB_MFP &= ~(SYS_GPB_MFP_PB0_Msk | SYS_GPB_MFP_PB1_Msk);
- SYS->GPB_MFP |= (SYS_GPB_MFP_PB0_UART0_RXD | SYS_GPB_MFP_PB1_UART0_TXD);
- }
- void UART0_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init UART */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Reset IP */
- SYS->IPRSTC2 |= SYS_IPRSTC2_UART0_RST_Msk;
- SYS->IPRSTC2 &= ~SYS_IPRSTC2_UART0_RST_Msk;
- /* Configure UART0 and set UART0 Baudrate */
- UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, 115200);
- UART0->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
- }
- void PowerDown()
- {
- printf("Enter power down ...\n");
- SYS_UnlockReg();
- /* Wakeup Enable */
- USBD->INTEN |= USBD_INTEN_WAKEUP_EN_Msk;
- /* To check if all the debug messages are finished */
- UART_WAIT_TX_EMPTY(UART0);
- CLK_PowerDown();
- if(g_usbd_RemoteWakeupEn && g_u8Suspend)
- {
- /* Enable PHY before sending Resume('K') state */
- USBD->ATTR |= USBD_ATTR_PHY_EN_Msk;
- /* Keep remote wakeup for 1 ms */
- USBD->ATTR |= USBD_ATTR_RWAKEUP_Msk;
- CLK_SysTickDelay(1000); /* Delay 1ms */
- USBD->ATTR ^= USBD_ATTR_RWAKEUP_Msk;
- printf("Remote Wakeup!!\n");
- }
- printf("device wakeup!\n");
- }
- void GPCD_IRQHandler(void)
- {
- /* To check if PD1 or PD2 interrupt occurred */
- if(GPIO_GET_INT_FLAG(PD, BIT1))
- {
- GPIO_CLR_INT_FLAG(PD, BIT1);
- printf("PD.1 INT occurred.\n");
- }
- else if(GPIO_GET_INT_FLAG(PD, BIT2))
- {
- GPIO_CLR_INT_FLAG(PD, BIT2);
- printf("PD.2 INT occurred.\n");
- }
- else
- {
- /* Un-expected interrupt. Just clear all PA and PB interrupts */
- PC->ISRC = PC->ISRC;
- PD->ISRC = PD->ISRC;
- printf("Un-expected interrupts.\n");
- }
- }
- /*---------------------------------------------------------------------------------------------------------*/
- /* Main Function */
- /*---------------------------------------------------------------------------------------------------------*/
- int32_t main(void)
- {
- /* Unlock protected registers */
- SYS_UnlockReg();
- SYS_Init();
- UART0_Init();
- printf("\n");
- printf("+-------------------------------------------------------+\n");
- printf("| NuMicro USB HID Sample Code |\n");
- printf("+-------------------------------------------------------+\n");
- printf("Use GPD1 to move mouse pointer right when GPD1 = 0\n");
- printf("Use GPD2 to report a key 'a' when GPD2 = 0\n");
- printf("Use GPD3 to report key - Volume + when GPD3 = 0\n");
- printf("Use GPD4 to report key - Volume - when GPD4 = 0\n");
- /* Set GPD5 output */
- GPIO_SetMode(PD, BIT5, GPIO_PMD_OUTPUT);
- /* Enable PD Interrupt for Remote Wakeup */
- GPIO_EnableInt(PD, 1, GPIO_INT_FALLING);
- GPIO_EnableInt(PD, 2, GPIO_INT_FALLING);
- NVIC_EnableIRQ(GPCD_IRQn);
- USBD_User_Open(&gsUserInfo, HID_ClassRequest, NULL);
- /* Endpoint configuration */
- HID_Init();
- USBD_Start();
- NVIC_EnableIRQ(USBD_IRQn);
- /* start to IN data */
- g_u8EP2Ready = 1;
- g_u8EP3Ready = 1;
- while(1)
- {
- HID_UpdateKbData();
- HID_UpdateMsData();
- /* Enter power down when USB suspend */
- if(g_u8Suspend)
- PowerDown();
- if(memcmp(SetReport, PreSetReport, 2))
- {
- if(SetReport[1] & 0x2)
- PD5 = 1; /* Turn On CapsLock LED */
- else
- PD5 = 0; /* Turn Off CapsLock LED */
- memcpy(PreSetReport, SetReport, 2);
- }
- }
- }
- /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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