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betaEncoderbetaEncoder
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mouse, keyboard and vendor specific io device support
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‎ch55xduino/ch55x/libraries/Generic_Examples/examples/05.USB/HidMouseKeyGen/HidMouseKeyGen.ino‎

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/*
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HID Keyboard, Mouse and vendor specific inout device example
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created 2021
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by betaEncoder for use with CH55xduino
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This example code is in the public domain.
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*/
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//For windows user, if you ever played with other HID device with the same PID C55D
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//You may need to uninstall the previous driver completely
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#ifndef USER_USB_RAM
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#error "This example needs to be compiled with a USER USB setting"
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#endif
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#include "src/userUsbHidMouseKeyGen/USBHIDKeyboard.h"
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#include "src/userUsbHidMouseKeyGen/USBHIDMouse.h"
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#include "src/userUsbHidMouseKeyGen/USBHIDGeneric.h"
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#define ADC_PIN 15
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#define BUTTON2_PIN 16
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#define BUTTON3_PIN 17
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#define LED_BUILTIN 14
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bool button1PressPrev = false;
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bool button2PressPrev = false;
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bool button3PressPrev = false;
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uint8_t adc=0;
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uint8_t *buff_in;
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uint8_t *buff_out;
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void setup() {
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USBInit();
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buff_in = get_IN_buffer();
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buff_out = get_OUT_buffer();
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pinMode(ADC_PIN, INPUT);
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pinMode(BUTTON2_PIN, INPUT_PULLUP);
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pinMode(BUTTON3_PIN, INPUT_PULLUP);
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pinMode(LED_BUILTIN, OUTPUT);
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digitalWrite(LED_BUILTIN, LOW);
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}
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void loop() {
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adc = analogRead(ADC_PIN);
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if(is_received()){
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clear_received_flag();
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if(buff_in[0]==3){ // report ID match
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if(buff_in[1]==0){
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if(buff_in[2]==1){
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digitalWrite(LED_BUILTIN, HIGH);
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}else{
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digitalWrite(LED_BUILTIN, LOW);
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}
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}else if(buff_in[1]==1){
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buff_out[1] = button2PressPrev;
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}else if(buff_in[1]==2){
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buff_out[1] = 0;
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buff_out[2] = adc;
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}
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buff_out[0] = 3; // report ID
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USB_EP1_send();
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}
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}
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//button 2 is mapped to left click
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bool button2Press = !digitalRead(BUTTON2_PIN);
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if (button2PressPrev != button2Press) {
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button2PressPrev = button2Press;
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if (button2Press) {
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Mouse_press(BUTTON_LEFT);
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}else{
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Mouse_release(BUTTON_LEFT);
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}
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}
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//button 3 is mapped to letter 'a'
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bool button3Press = !digitalRead(BUTTON3_PIN);
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if (button3PressPrev != button3Press) {
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button3PressPrev = button3Press;
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if (button3Press) {
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Keyboard_press('a');
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} else {
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Keyboard_release('a');
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}
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}
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//map capsLock to LED
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//Bit 0: NUM lock, Bit 1: CAPS lock, Bit 2: SCROLL lock, Bit 3: Compose, Bit 4: Kana,
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if (Keyboard_getLEDStatus() & 2) {
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//digitalWrite(LED_BUILTIN, HIGH);
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} else {
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//digitalWrite(LED_BUILTIN, LOW);
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}
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delay(50); //naive debouncing
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}

‎ch55xduino/ch55x/libraries/Generic_Examples/examples/05.USB/HidMouseKeyGen/src/userUsbHidMouseKeyGen/USBHIDGeneric.c‎

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#include <stdint.h>
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#include <stdbool.h>
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#include "include/ch5xx.h"
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#include "include/ch5xx_usb.h"
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#include "USBconstant.h"
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#include "USBhandler.h"
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volatile uint8_t received = 0;
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//volatile __xdata uint8_t UpPoint1_Busy; //Flag of whether upload pointer is busy
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volatile __xdata uint8_t USBByteCountEP1 = 0; //Bytes of received data on USB endpoint
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volatile __xdata uint8_t USBBufOutPointEP1 = 0; //Data pointer for fetching
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__xdata uint8_t HIDRep[64];
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typedef void( *pTaskFn)( void );
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void delayMicroseconds(uint16_t us);
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void USBInit(){
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uint8_t i;
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USBDeviceCfg(); //Device mode configuration
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USBDeviceEndPointCfg(); //Endpoint configuration
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USBDeviceIntCfg(); //Interrupt configuration
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UEP0_T_LEN = 0;
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UEP1_T_LEN = 0; //Pre-use send length must be cleared
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for(i=0;i<sizeof(HIDRep);i++){ //clear buffer
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HIDRep[i] = 0;
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}
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}
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uint8_t* get_IN_buffer(){
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return Ep1Buffer;
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}
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uint8_t* get_OUT_buffer(){
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return HIDRep;
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}
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bool is_received(){
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return received;
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}
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void clear_received_flag(){
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received = 0;
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USBByteCountEP1 = 0;//USB_RX_LEN;
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USBBufOutPointEP1 = 0; //Reset Data pointer for fetching
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}
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void USB_EP1_IN(){
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UEP1_T_LEN = 0;
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UEP1_CTRL = UEP1_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_NAK; // Default NAK
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UpPoint1_Busy = 0; //Clear busy flag
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}
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void USB_EP1_OUT(){
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if ( U_TOG_OK ) // Discard unsynchronized packets
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{
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received = 1;
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if (USBByteCountEP1) UEP1_CTRL = UEP1_CTRL & ~ MASK_UEP_R_RES | UEP_R_RES_NAK; //Respond NAK after a packet. Let main code change response after handling.
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}
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}
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uint8_t USB_EP1_send(){
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uint16_t waitWriteCount = 0;
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waitWriteCount = 0;
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while (UpPoint1_Busy){//wait for 250ms or give up
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waitWriteCount++;
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delayMicroseconds(5);
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if (waitWriteCount>=50000) return 0;
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}
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for (uint8_t i=0;i<sizeof(HIDRep);i++){ //load data for upload
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Ep1Buffer[64+i] = HIDRep[i];
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}
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UEP1_T_LEN = sizeof(HIDRep); //data length
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UpPoint1_Busy = 1;
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UEP1_CTRL = UEP1_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_ACK; //upload data and respond ACK
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return 1;
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}

‎ch55xduino/ch55x/libraries/Generic_Examples/examples/05.USB/HidMouseKeyGen/src/userUsbHidMouseKeyGen/USBHIDGeneric.h‎

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#ifndef __USB_HID_GENERIC_H__
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#define __USB_HID_GENERIC_H__
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#include <stdint.h>
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#include "include/ch5xx.h"
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#include "include/ch5xx_usb.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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void USBInit(void);
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uint8_t* get_IN_buffer();
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uint8_t* get_OUT_buffer();
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bool is_received();
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void clear_received_flag();
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uint8_t USB_EP1_send();
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif

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