New only partially working (and only on esp32) N64 input impl
This commit is contained in:
parent
1e78ac7fdc
commit
e48656ec91
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@ -128,11 +128,48 @@ extends = micro, in-snes, out-usbradio
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src_filter = ${in-snes.src_filter} ${out-usbradio.src_filter}
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build_flags = ${in-snes.build_flags} ${out-usbradio.build_flags}
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# n64 input
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[in-n64]
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src_filter = -<*> +<N64.cpp>
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build_flags = ${common.build_flags} -DGAMEPAD_INPUT=3 -O0
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#lib_deps = pothos/N64Controller@^0.1.1
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[env:esp32-n64-bt]
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extends = esp32, in-n64, out-bt
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src_filter = ${in-n64.src_filter} ${out-bt.src_filter}
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build_flags = ${in-n64.build_flags} ${out-bt.build_flags}
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[env:esp32-n64-debug]
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extends = esp32, in-n64, out-debug
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src_filter = ${in-n64.src_filter} ${out-debug.src_filter}
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build_flags = ${in-n64.build_flags} ${out-debug.build_flags}
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[env:micro-n64-usb]
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extends = micro, in-n64, out-usb
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src_filter = ${in-n64.src_filter} ${out-usb.src_filter}
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build_flags = ${in-n64.build_flags} ${out-usb.build_flags}
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[env:micro-n64-debug]
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extends = micro, in-n64, out-debug
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src_filter = ${in-n64.src_filter} ${out-debug.src_filter}
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build_flags = ${in-n64.build_flags} ${out-debug.build_flags}
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[env:micro-n64-radio]
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extends = micro, in-n64, out-radio
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src_filter = ${in-n64.src_filter} ${out-radio.src_filter}
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build_flags = ${in-n64.build_flags} ${out-radio.build_flags}
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[env:micro-n64-usbradio]
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extends = micro, in-n64, out-usbradio
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src_filter = ${in-n64.src_filter} ${out-usbradio.src_filter}
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build_flags = ${in-n64.build_flags} ${out-usbradio.build_flags}
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# debug input
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[in-debug]
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src_filter = -<*> +<Debug.cpp>
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build_flags = ${common.build_flags} -DGAMEPAD_INPUT=2
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build_flags = ${common.build_flags} -DGAMEPAD_INPUT=0
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[env:esp32-debug-bt]
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extends = esp32, in-debug, out-bt
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@ -19,11 +19,11 @@ void loop() {
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Serial.println("Press buttons 1 and 32. Move all axes to center. Set DPAD to down right.");
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gamepad.press(c, BUTTON_1);
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gamepad.press(c, BUTTON_32);
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gamepad.setAxes(c, 0, 0, 0, 0, 0, 0, DPAD_DOWN_RIGHT);
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gamepad.setAxis(c, 0, 0, 0, 0, 0, 0, DPAD_DOWN_RIGHT);
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delay(500);
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Serial.println("Release all buttons. Move all axes to center. Set DPAD to center.");
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gamepad.buttons(c, 0);
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gamepad.setAxes(c, 0, 0, 0, 0, 0, 0, DPAD_CENTER);
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gamepad.setAxis(c, 0, 0, 0, 0, 0, 0, DPAD_CENTER);
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delay(500);
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}
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}
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@ -0,0 +1,336 @@
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#include "Arduino.h"
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//#define PRINT_Y_AXIS_VALUES 1
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//#define PRINT_X_AXIS_VALUES 1
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//#define PLOT_CONSOLE_POLLING 1
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#ifndef GAMEPAD_COUNT
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#define GAMEPAD_COUNT 1
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#endif
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#include "gamepad/Gamepad.h"
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#include "util.cpp"
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#define DATA_PIN 13
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#define LINE_WRITE_HIGH pinMode(DATA_PIN, INPUT_PULLUP)
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#define LINE_WRITE_LOW pinMode(DATA_PIN, OUTPUT)
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#define DATA_SIZE 450 // number of sample points to poll
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#define DATA_OFFSET 0 // number of samples to ignore after staring to poll
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#define MAX_INCLINE_AXIS_X 60
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#define MAX_INCLINE_AXIS_Y 60
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#define BIT_THRESHOLD 6
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GAMEPAD_CLASS gamepad;
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struct ControllerData {
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bool buttonA;
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bool buttonB;
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bool buttonZ;
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bool buttonL;
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bool buttonR;
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bool buttonStart;
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bool DPadUp;
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bool DPadDown;
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bool DPadLeft;
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bool DPadRight;
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bool CUp;
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bool CDown;
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bool CLeft;
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bool CRight;
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short xAxis;
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short yAxis;
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bool xAxisRaw[8];
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bool yAxisRaw[8];
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};
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// buffer to hold data being read from controller
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bool buffer[DATA_SIZE + DATA_OFFSET];
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// bit resolution and offsets
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int bitOffsets[32];
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int bitResolution;
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/** Function to send a Command to the attached N64-Controller.
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* Must be run from RAM to defy timing differences introduced from
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* reading Code from ESP32's SPI Flash Chip.
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*/
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//#ifdef ARDUINO_ARCH_ESP32
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#if defined(CONFIG_BT_ENABLED)
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void IRAM_ATTR sendCommand(byte command)
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#else
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// todo: what should be done here??
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void sendCommand(byte command)
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#endif
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{
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// the current bit to write
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bool bit;
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// clear output buffer
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memset(buffer, 0, DATA_SIZE + DATA_OFFSET);
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noInterrupts();
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// for each bit
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for (int i = 0; i < 8; i++) {
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// get value
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bit = (1 << (7 - i)) & command;
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// write data
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LINE_WRITE_LOW;
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delayMicroseconds((3 - 2 * bit));
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LINE_WRITE_HIGH;
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delayMicroseconds((1 + 2 * bit));
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}
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// console stop bit
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LINE_WRITE_LOW;
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delayMicroseconds(1);
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LINE_WRITE_HIGH;
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delayMicroseconds(2);
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// read returned data as fast as possible
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for (int i = 0; i < DATA_SIZE + DATA_OFFSET; i++) {
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buffer[i] = digitalRead(DATA_PIN);
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}
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interrupts();
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// plot polling process from controller if unstructed to
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#ifdef PLOT_CONSOLE_POLLING
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for (int i = 0; i < DATA_SIZE + DATA_OFFSET; i++) {
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Serial.println(buffer[i] * 2500);
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}
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#endif
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}
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/* Function to extract a controller bit from the buffer of returned data */
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void getBit(bool *bit, int offset, bool *data) {
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// sanity check offset
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if (offset < 0)
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offset = 0;
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// count
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short count = 0;
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// get count from offset to offset + length
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for (int i = offset + DATA_OFFSET; i < offset + bitResolution; i++) {
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count += *(data + i);
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}
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// if offset surpasses threshold set bit
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*bit = false;
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if (count > BIT_THRESHOLD)
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*bit = true;
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}
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/** Function to populate the controller struct if command 0x01 was sent.
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* Buttons are set according to data in buffer, raw axis data is written,
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* Axis Data is correctly decoded from raw axis data by taking two's complement
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* and checking if value if below 'MAX_INCLINE_AXIS_X' or 'MAX_INCLINE_AXIS_Y'.
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* If values surpass the maximum incline they are set to match those values.
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*/
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void populateControllerStruct(ControllerData *data) {
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// first byte
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getBit(&(data->buttonA), bitOffsets[0], &buffer[0]);
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getBit(&(data->buttonB), bitOffsets[1], &buffer[0]);
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getBit(&(data->buttonZ), bitOffsets[2], &buffer[0]);
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getBit(&(data->buttonStart), bitOffsets[3], &buffer[0]);
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getBit(&(data->DPadUp), bitOffsets[4], &buffer[0]);
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getBit(&(data->DPadDown), bitOffsets[5], &buffer[0]);
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getBit(&(data->DPadLeft), bitOffsets[6], &buffer[0]);
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getBit(&(data->DPadRight), bitOffsets[7], &buffer[0]);
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// second byte, first two bits are unused
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getBit(&(data->buttonL), bitOffsets[10], &buffer[0]);
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getBit(&(data->buttonR), bitOffsets[11], &buffer[0]);
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getBit(&(data->CUp), bitOffsets[12], &buffer[0]);
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getBit(&(data->CDown), bitOffsets[13], &buffer[0]);
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getBit(&(data->CLeft), bitOffsets[14], &buffer[0]);
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getBit(&(data->CRight), bitOffsets[15], &buffer[0]);
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// third byte
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getBit(&(data->xAxisRaw[0]), bitOffsets[16], &buffer[0]);
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getBit(&(data->xAxisRaw[1]), bitOffsets[17], &buffer[0]);
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getBit(&(data->xAxisRaw[2]), bitOffsets[18], &buffer[0]);
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getBit(&(data->xAxisRaw[3]), bitOffsets[19], &buffer[0]);
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getBit(&(data->xAxisRaw[4]), bitOffsets[20], &buffer[0]);
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getBit(&(data->xAxisRaw[5]), bitOffsets[21], &buffer[0]);
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getBit(&(data->xAxisRaw[6]), bitOffsets[22], &buffer[0]);
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getBit(&(data->xAxisRaw[7]), bitOffsets[23], &buffer[0]);
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// fourth byte
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getBit(&(data->yAxisRaw[0]), bitOffsets[24], &buffer[0]);
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getBit(&(data->yAxisRaw[1]), bitOffsets[25], &buffer[0]);
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getBit(&(data->yAxisRaw[2]), bitOffsets[26], &buffer[0]);
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getBit(&(data->yAxisRaw[3]), bitOffsets[27], &buffer[0]);
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getBit(&(data->yAxisRaw[4]), bitOffsets[28], &buffer[0]);
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getBit(&(data->yAxisRaw[5]), bitOffsets[29], &buffer[0]);
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getBit(&(data->yAxisRaw[6]), bitOffsets[30], &buffer[0]);
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getBit(&(data->yAxisRaw[7]), bitOffsets[31], &buffer[0]);
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// sum up bits to get axis bytes
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data->xAxis = 0;
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data->yAxis = 0;
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for (int i = 0; i < 8; i++) {
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data->xAxis += (data->xAxisRaw[i] * (0x80 >> (i)));
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data->yAxis += (data->yAxisRaw[i] * (0x80 >> (i)));
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// print y axis values
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#ifdef PRINT_Y_AXIS_VALUES
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Serial.printf(
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"yRaw: %i %i %i %i %i %i %i %i\n", data->yAxisRaw[0], data->yAxisRaw[1], data->yAxisRaw[2], data->yAxisRaw[3], data->yAxisRaw[4], data->yAxisRaw[5], data->yAxisRaw[6], data->yAxisRaw[7]);
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Serial.printf("yAxis: %i \n", data->yAxis);
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#endif
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// print x axis values
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#ifdef PRINT_X_AXIS_VALUES
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Serial.printf(
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"xRaw: %i %i %i %i %i %i %i %i\n", data->xAxisRaw[0], data->xAxisRaw[1], data->xAxisRaw[2], data->xAxisRaw[3], data->xAxisRaw[4], data->xAxisRaw[5], data->xAxisRaw[6], data->xAxisRaw[7]);
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Serial.printf("xAxis: %i \n", data->xAxis);
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#endif
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}
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// decode xAxis two's complement
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if (data->xAxis & 0x80) {
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data->xAxis = -1 * (0xff - data->xAxis);
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}
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// decode yAxis two's complement
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if (data->yAxis & 0x80) {
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data->yAxis = -1 * (0xff - data->yAxis);
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}
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// keep x axis below maxIncline
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if (data->xAxis > MAX_INCLINE_AXIS_X)
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data->xAxis = MAX_INCLINE_AXIS_X;
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if (data->xAxis < -MAX_INCLINE_AXIS_X)
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data->xAxis = -MAX_INCLINE_AXIS_X;
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// keep y axis below maxIncline
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if (data->yAxis > MAX_INCLINE_AXIS_Y)
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data->yAxis = MAX_INCLINE_AXIS_Y;
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if (data->yAxis < -MAX_INCLINE_AXIS_Y)
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data->yAxis = -MAX_INCLINE_AXIS_Y;
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//Serial.printf("xaxis: %-3i yaxis: %-3i \n",data->xAxis,data->yAxis);
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}
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void updateOffsetsAndResolution() {
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// the current bit counter
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int bitCounter = 0;
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// to hold the offset of A Button's falling edge
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int bitAfallingOffset = 0;
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// iterate over buffer
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for (int i = 0; i < DATA_SIZE + DATA_OFFSET - 1; i++) {
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// if a falling edge is detected
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if (buffer[i] == true && buffer[1 + i] == false) {
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// store bit's end offset
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bitOffsets[bitCounter] = i + 1;
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// if it's the A button store offset of the falling edge
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if (bitCounter == 0)
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bitAfallingOffset = i + 1;
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// if it's the B button calculate the bit Resolution
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if (bitCounter == 1)
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bitResolution = (i + 1) - bitAfallingOffset;
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// increment bit counter
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bitCounter++;
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}
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}
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//Serial.printf("Bit resolution is %i \n", bitResolution);
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// calculate bit's beginning offsets by subtracting resolution
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for (int i = 0; i < 32; i++) {
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bitOffsets[i] -= bitResolution;
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//Serial.printf("beginning of bit %i detected @ begin+%i \n", i + 1, bitOffsets[i]);
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}
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}
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ControllerData controller;
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void setup() {
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Serial.begin(115200);
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gamepad.begin();
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// setup io pins
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//setupIO();
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// the controller data line
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LINE_WRITE_HIGH;
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#ifdef PLOT_CONSOLE_POLLING
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delay(5000);
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sendCommand(0x01);
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while (true)
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;
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#endif
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delay(5000);
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sendCommand(0x01);
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updateOffsetsAndResolution();
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}
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void loop() {
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Serial.println("sending command to n64");
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// send command 0x01 to n64 controller
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sendCommand(0x01);
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// store received data in controller struct
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populateControllerStruct(&controller);
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// output received data to ique
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//outputToiQue(&controller);
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uint8_t c = 0; // for now just do 1 pad
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gamepad.buttons(c, 0);
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if (controller.buttonA) {
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gamepad.press(c, BUTTON_A);
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}
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if (controller.buttonB) {
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gamepad.press(c, BUTTON_B);
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}
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if (controller.buttonZ) {
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gamepad.press(c, BUTTON_TR);
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}
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if (controller.buttonL) {
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gamepad.press(c, BUTTON_L);
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}
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if (controller.buttonR) {
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gamepad.press(c, BUTTON_R);
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}
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if (controller.buttonStart) {
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gamepad.press(c, BUTTON_START);
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}
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auto hat = calculateDpadDirection(controller.DPadUp, controller.DPadDown, controller.DPadLeft, controller.DPadRight);
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auto cHat = dpadToAxis(calculateDpadDirection(controller.CUp, controller.CDown, controller.CLeft, controller.CRight));
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// todo: need to scale max/min to our max/min
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gamepad.setAxis(c, controller.xAxis, controller.yAxis, cHat.x, cHat.y, 0, 0, hat);
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// polling must not occur faster than every 20 ms
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delay(14);
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//checkUpdateCombo(&controller);
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//Serial.printf("DPAD: %i %i %i %i \n", controller.DPadUp, controller.DPadDown, controller.DPadLeft, controller.DPadRight);
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//Serial.printf("C: %i %i %i %i \n", controller.CUp, controller.CDown, controller.CLeft, controller.CRight);
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//Serial.printf("Y: %i X: %i\n", controller.yAxis, controller.xAxis);
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//Serial.print("C: ");
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//Serial.println(controller.CUp);
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//delay(500);
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}
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@ -1,7 +1,9 @@
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#include "Arduino.h"
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#ifndef GAMEPAD_COUNT
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#define GAMEPAD_COUNT 2
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#endif
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#define BUTTON_COUNT 12 // SNES has 12, NES only has 8
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//individual data pin for each controller
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@ -19,9 +19,9 @@ class DebugGamepad : public AbstractGamepad {
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Serial.println("DebugGamepad.begin");
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}
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virtual void setAxes(const uint8_t cIdx, int16_t x, int16_t y, int16_t z, int16_t rZ, char rX, char rY, signed char hat) {
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Serial.println("DebugGamepad.setAxes");
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AbstractGamepad::setAxes(cIdx, x, y, z, rZ, rX, rY, hat);
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virtual void setAxis(const uint8_t cIdx, int16_t x, int16_t y, int16_t z, int16_t rZ, char rX, char rY, signed char hat) {
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Serial.println("DebugGamepad.setAxis");
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AbstractGamepad::setAxis(cIdx, x, y, z, rZ, rX, rY, hat);
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}
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virtual void sendHidReport(const uint8_t cIdx, const void* d, int len) {
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@ -67,6 +67,10 @@
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#define DPAD_LEFT 7
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#define DPAD_UP_LEFT 8
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#define AXIS_CENTER 0
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#define AXIS_MAX 32768
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#define AXIS_MIN -32767
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#ifndef GAMEPAD_REPORT_ARRAY_ADD
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// this is used by radio gamepad to send additional info
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#define GAMEPAD_REPORT_ARRAY_ADD 0
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@ -185,7 +189,7 @@ class AbstractGamepad {
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return true;
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}
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virtual void setAxes(const uint8_t cIdx, int16_t x, int16_t y, int16_t z, int16_t rZ, char rX, char rY, signed char hat) {
|
||||
virtual void setAxis(const uint8_t cIdx, int16_t x, int16_t y, int16_t z, int16_t rZ, char rX, char rY, signed char hat) {
|
||||
if (x == -32768) {
|
||||
x = -32767;
|
||||
}
|
||||
|
@ -225,7 +229,7 @@ class AbstractGamepad {
|
|||
}
|
||||
|
||||
virtual void setHatSync(const uint8_t cIdx, signed char hat) {
|
||||
setAxes(cIdx, 0, 0, 0, 0, 0, 0, hat);
|
||||
setAxis(cIdx, 0, 0, 0, 0, 0, 0, hat);
|
||||
}
|
||||
|
||||
virtual void buttons(const uint8_t cIdx, uint32_t b) {
|
||||
|
|
|
@ -0,0 +1,63 @@
|
|||
|
||||
uint8_t calculateDpadDirection(const bool up, const bool down, const bool left, const bool right) {
|
||||
if (down) {
|
||||
if (right) {
|
||||
return DPAD_DOWN_RIGHT;
|
||||
} else if (left) {
|
||||
return DPAD_DOWN_LEFT;
|
||||
} else {
|
||||
return DPAD_DOWN;
|
||||
}
|
||||
} else if (up) {
|
||||
if (right) {
|
||||
return DPAD_UP_RIGHT;
|
||||
} else if (left) {
|
||||
return DPAD_UP_LEFT;
|
||||
} else {
|
||||
return DPAD_UP;
|
||||
}
|
||||
} else if (right) {
|
||||
return DPAD_RIGHT;
|
||||
} else if (left) {
|
||||
return DPAD_LEFT;
|
||||
} else {
|
||||
return DPAD_CENTERED;
|
||||
}
|
||||
}
|
||||
|
||||
struct Axis {
|
||||
int16_t x;
|
||||
int16_t y;
|
||||
};
|
||||
|
||||
struct Axis axis(int16_t x, int16_t y) {
|
||||
Axis axis;
|
||||
axis.x = x;
|
||||
axis.y = y;
|
||||
return axis;
|
||||
}
|
||||
|
||||
struct Axis dpadToAxis(uint8_t dpad) {
|
||||
switch(dpad) {
|
||||
case DPAD_CENTER:
|
||||
return axis(AXIS_CENTER, AXIS_CENTER);
|
||||
case DPAD_UP:
|
||||
return axis(AXIS_CENTER, AXIS_MIN);
|
||||
case DPAD_UP_RIGHT:
|
||||
return axis(AXIS_MAX, AXIS_MAX);
|
||||
case DPAD_RIGHT:
|
||||
return axis(AXIS_MAX, AXIS_CENTER);
|
||||
case DPAD_DOWN_RIGHT:
|
||||
return axis(AXIS_MAX, AXIS_MAX);
|
||||
case DPAD_DOWN:
|
||||
return axis(AXIS_CENTER, AXIS_MAX);
|
||||
case DPAD_DOWN_LEFT:
|
||||
return axis(AXIS_MIN, AXIS_MAX);
|
||||
case DPAD_LEFT:
|
||||
return axis(AXIS_MIN, AXIS_CENTER);
|
||||
case DPAD_UP_LEFT:
|
||||
return axis(AXIS_MIN, AXIS_MIN);
|
||||
}
|
||||
// todo: panic here?
|
||||
return axis(AXIS_CENTER, AXIS_CENTER);
|
||||
}
|
Loading…
Reference in New Issue