mirror of git://git.jvnv.net/arcin
269 lines
5.3 KiB
C++
269 lines
5.3 KiB
C++
#include <rcc/rcc.h>
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#include <gpio/gpio.h>
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#include <interrupt/interrupt.h>
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#include <timer/timer.h>
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#include <os/time.h>
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#include <usb/usb.h>
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#include <usb/descriptor.h>
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auto dev_desc = device_desc(0x200, 0, 0, 0, 64, 0x1234, 0x5678, 0x110, 1, 2, 3, 1);
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auto conf_desc = configuration_desc(0, 1, 0, 0xc0, 0);
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desc_t dev_desc_p = {sizeof(dev_desc), (void*)&dev_desc};
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desc_t conf_desc_p = {sizeof(conf_desc), (void*)&conf_desc};
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static Pin usb_dm = GPIOA[11];
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static Pin usb_dp = GPIOA[12];
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static Pin usb_pu = GPIOA[15];
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static PinArray button_inputs = GPIOB.array(0, 10);
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static PinArray button_leds = GPIOC.array(0, 10);
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static Pin qe1a = GPIOA[0];
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static Pin qe1b = GPIOA[1];
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static Pin qe2a = GPIOA[6];
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static Pin qe2b = GPIOA[7];
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static Pin led1 = GPIOA[8];
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static Pin led2 = GPIOA[9];
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USB_f1 usb(USB, dev_desc_p, conf_desc_p);
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class USB_arcin_test : public USB_class_driver {
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private:
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USB_generic& usb;
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uint8_t qe_state;
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bool set_buttons(uint16_t wValue, uint16_t wIndex, uint16_t wLength) {
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button_inputs.set(~wValue);
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usb.write(0, nullptr, 0);
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return true;
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}
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bool get_leds(uint16_t wValue, uint16_t wIndex, uint16_t wLength) {
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if(wLength != 4) {
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return false;
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}
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uint32_t buf = (button_leds.get() ^ 0x7ff) | (led1.get() ? 0 : 0x10000) | (led2.get() ? 0 : 0x20000);
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usb.write(0, &buf, 4);
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return true;
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}
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void inc_qe() {
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switch(qe_state++ & 3) {
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case 0:
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qe1b.on();
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qe2b.on();
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break;
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case 1:
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qe1a.on();
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qe2a.on();
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break;
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case 2:
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qe1b.off();
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qe2b.off();
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break;
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case 3:
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qe1a.off();
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qe2a.off();
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break;
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}
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}
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void dec_qe() {
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switch(qe_state-- & 3) {
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case 0:
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qe1a.on();
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qe2a.on();
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break;
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case 1:
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qe1b.off();
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qe2b.off();
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break;
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case 2:
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qe1a.off();
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qe2a.off();
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break;
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case 3:
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qe1b.on();
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qe2b.on();
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break;
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}
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}
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bool count_qe(uint16_t wValue, uint16_t wIndex, uint16_t wLength) {
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int8_t n = wValue & 0xff;
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while(n != 0) {
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if(n > 0) {
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inc_qe();
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n--;
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} else {
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dec_qe();
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n++;
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}
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}
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usb.write(0, nullptr, 0);
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return true;
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}
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public:
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USB_arcin_test(USB_generic& usbd) : usb(usbd) {
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usb.register_driver(this);
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}
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protected:
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virtual SetupStatus handle_setup(uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength) {
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if(bmRequestType == 0xc0 && bRequest == 0xf0) {
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return set_buttons(wValue, wIndex, wLength) ? SetupStatus::Ok : SetupStatus::Stall;
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}
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if(bmRequestType == 0xc0 && bRequest == 0xf1) {
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return get_leds(wValue, wIndex, wLength) ? SetupStatus::Ok : SetupStatus::Stall;
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}
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if(bmRequestType == 0xc0 && bRequest == 0xf2) {
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return count_qe(wValue, wIndex, wLength) ? SetupStatus::Ok : SetupStatus::Stall;
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}
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return SetupStatus::Unhandled;
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}
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};
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USB_arcin_test usb_arcin_test(usb);
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uint32_t serial_num() {
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uint32_t* uid = (uint32_t*)0x1ffff7ac;
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return uid[0] * uid[1] * uid[2];
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}
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class USB_strings : public USB_class_driver {
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private:
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USB_generic& usb;
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public:
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USB_strings(USB_generic& usbd) : usb(usbd) {
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usb.register_driver(this);
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}
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protected:
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virtual SetupStatus handle_setup(uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength) {
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// Get string descriptor.
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if(bmRequestType == 0x80 && bRequest == 0x06 && (wValue & 0xff00) == 0x0300) {
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const void* desc = nullptr;
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uint16_t buf[9];
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switch(wValue & 0xff) {
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case 0:
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desc = u"\u0304\u0409";
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break;
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case 1:
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desc = u"\u0308zyp";
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break;
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case 2:
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desc = u"\u0316arcin test";
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break;
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case 3:
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{
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buf[0] = 0x0312;
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uint32_t id = serial_num();
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for(int i = 8; i > 0; i--) {
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buf[i] = (id & 0xf) > 9 ? 'A' + (id & 0xf) - 0xa : '0' + (id & 0xf);
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id >>= 4;
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}
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desc = buf;
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}
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break;
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}
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if(!desc) {
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return SetupStatus::Unhandled;
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}
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uint8_t len = *(uint8_t*)desc;
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if(len > wLength) {
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len = wLength;
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}
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usb.write(0, (uint32_t*)desc, len);
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return SetupStatus::Ok;
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}
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return SetupStatus::Unhandled;
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}
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};
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USB_strings usb_strings(usb);
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int main() {
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rcc_init();
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// Initialize system timer.
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STK.LOAD = 72000000 / 8 / 1000; // 1000 Hz.
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STK.CTRL = 0x03;
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RCC.enable(RCC.GPIOA);
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RCC.enable(RCC.GPIOB);
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RCC.enable(RCC.GPIOC);
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usb_dm.set_mode(Pin::AF);
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usb_dm.set_af(14);
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usb_dp.set_mode(Pin::AF);
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usb_dp.set_af(14);
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RCC.enable(RCC.USB);
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usb.init();
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usb_pu.set_mode(Pin::Output);
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usb_pu.on();
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button_inputs.set(0x7ff);
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button_inputs.set_type(Pin::OpenDrain);
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button_inputs.set_mode(Pin::Output);
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button_leds.set_mode(Pin::Input);
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button_leds.set_pull(Pin::PullUp);
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led1.set_mode(Pin::Input);
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led1.set_pull(Pin::PullUp);
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led2.set_mode(Pin::Input);
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led2.set_pull(Pin::PullUp);
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qe1a.set(1);
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qe1a.set_type(Pin::OpenDrain);
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qe1a.set_mode(Pin::Output);
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qe1b.set(1);
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qe1b.set_type(Pin::OpenDrain);
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qe1b.set_mode(Pin::Output);
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qe2a.set(1);
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qe2a.set_type(Pin::OpenDrain);
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qe2a.set_mode(Pin::Output);
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qe2b.set(1);
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qe2b.set_type(Pin::OpenDrain);
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qe2b.set_mode(Pin::Output);
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while(1) {
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usb.process();
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}
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}
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