diff options
Diffstat (limited to 'main.cpp')
| -rw-r--r-- | main.cpp | 686 |
1 files changed, 0 insertions, 686 deletions
diff --git a/main.cpp b/main.cpp deleted file mode 100644 index 5294b29..0000000 --- a/main.cpp +++ /dev/null @@ -1,686 +0,0 @@ -#include <rcc/rcc.h> -#include <rcc/flash.h> -#include <gpio/gpio.h> -#include <interrupt/interrupt.h> -#include <timer/timer.h> -#include <os/time.h> -#include <usb/usb.h> -#include <usb/descriptor.h> -#include <usb/hid.h> - -#include <string.h> - -static uint32_t& reset_reason = *(uint32_t*)0x10000000; - -static bool do_reset_bootloader; -static bool do_reset; - -void reset() { - SCB.AIRCR = (0x5fa << 16) | (1 << 2); // SYSRESETREQ -} - -void reset_bootloader() { - reset_reason = 0xb007; - reset(); -} - -class Configloader { - private: - enum { - MAGIC = 0xc0ff600d, - }; - - struct header_t { - uint32_t magic; - uint32_t size; - }; - - uint32_t flash_addr; - - public: - Configloader(uint32_t addr) : flash_addr(addr) {} - - bool read(uint32_t size, void* data) { - header_t* header = (header_t*)flash_addr; - - if(header->magic != MAGIC) { - return false; - } - - if(header->size < size) { - size = header->size; - } - - memcpy(data, (void*)(flash_addr + sizeof(header_t)), size); - - return true; - } - - bool write(uint32_t size, void* data) { - header_t header = {MAGIC, size}; - - // Unlock flash. - FLASH.KEYR = 0x45670123; - FLASH.KEYR = 0xCDEF89AB; - - // Erase page. - FLASH.CR = 1 << 1; // PER - FLASH.AR = flash_addr; - FLASH.CR = (1 << 6) | (1 << 1); // STRT, PER - - while(FLASH.SR & (1 << 0)); // BSY - - FLASH.SR &= ~(1 << 5); // EOP - FLASH.CR = 0; - - // Write header. - uint16_t* src = (uint16_t*)&header; - uint16_t* dest = (uint16_t*)flash_addr; - - for(uint32_t n = 0; n < sizeof(header); n += 2) { - FLASH.CR = 1 << 0; // PG - - *dest++ = *src++; - - while(FLASH.SR & (1 << 0)); // BSY - } - - // Write data. - src = (uint16_t*)data; - - for(uint32_t n = 0; n < size; n += 2) { - FLASH.CR = 1 << 0; // PG - - *dest++ = *src++; - - while(FLASH.SR & (1 << 0)); // BSY - } - - // Lock flash. - FLASH.CR = 1 << 7; // LOCK - - return true; - } -}; - -Configloader configloader(0x801f800); - -struct config_t { - uint8_t label[12]; - uint32_t flags; - int8_t qe1_sens; - int8_t qe2_sens; - uint8_t ps2_mode; - uint8_t ws2812b_mode; -}; - -config_t config; - -auto report_desc = gamepad( - // Inputs. - report_id(1), - - buttons(15), - padding_in(1), - - usage_page(UsagePage::Desktop), - usage(DesktopUsage::X), - logical_minimum(0), - logical_maximum(255), - report_count(1), - report_size(8), - input(0x02), - - usage_page(UsagePage::Desktop), - usage(DesktopUsage::Y), - logical_minimum(0), - logical_maximum(255), - report_count(1), - report_size(8), - input(0x02), - - // Outputs. - report_id(2), - - usage_page(UsagePage::Ordinal), - usage(1), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(2), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(3), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(4), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(5), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(6), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(7), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(8), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(9), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(10), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - usage_page(UsagePage::Ordinal), - usage(11), - collection(Collection::Logical, - usage_page(UsagePage::LED), - usage(0x4b), - report_size(1), - report_count(1), - output(0x02) - ), - - padding_out(5), - - // Bootloader - report_id(0xb0), - - usage_page(0xff55), - usage(0xb007), - logical_minimum(0), - logical_maximum(255), - report_size(8), - report_count(1), - - feature(0x02), // HID bootloader function - - // Configuration - report_id(0xc0), - - usage(0xc000), - feature(0x02), // Config segment - - usage(0xc001), - feature(0x02), // Config segment size - - feature(0x01), // Padding - - usage(0xc0ff), - report_count(60), - feature(0x02) // Config data -); - -struct input_report_t { - uint8_t report_id; - uint16_t buttons; - uint8_t axis_x; - uint8_t axis_y; -} __attribute__((packed)); - -struct output_report_t { - uint8_t report_id; - uint16_t leds; -} __attribute__((packed)); - -struct bootloader_report_t { - uint8_t report_id; - uint8_t func; -} __attribute__((packed)); - -struct config_report_t { - uint8_t report_id; - uint8_t segment; - uint8_t size; - uint8_t pad; - uint8_t data[60]; -} __attribute__((packed)); - -auto dev_desc = device_desc(0x200, 0, 0, 0, 64, 0x1d50, 0x6080, 0x110, 1, 2, 3, 1); -auto conf_desc = configuration_desc(1, 1, 0, 0xc0, 0, - // HID interface. - interface_desc(0, 0, 1, 0x03, 0x00, 0x00, 0, - hid_desc(0x111, 0, 1, 0x22, sizeof(report_desc)), - endpoint_desc(0x81, 0x03, 16, 1) - ) -); - -desc_t dev_desc_p = {sizeof(dev_desc), (void*)&dev_desc}; -desc_t conf_desc_p = {sizeof(conf_desc), (void*)&conf_desc}; -desc_t report_desc_p = {sizeof(report_desc), (void*)&report_desc}; - -static Pin usb_dm = GPIOA[11]; -static Pin usb_dp = GPIOA[12]; -static Pin usb_pu = GPIOA[15]; - -static PinArray button_inputs = GPIOB.array(0, 10); -static PinArray button_leds = GPIOC.array(0, 10); - -static Pin qe1a = GPIOA[0]; -static Pin qe1b = GPIOA[1]; -static Pin qe2a = GPIOA[6]; -static Pin qe2b = GPIOA[7]; - -static Pin led1 = GPIOA[8]; -static Pin led2 = GPIOA[9]; - -USB_f1 usb(USB, dev_desc_p, conf_desc_p); - -uint32_t last_led_time; - -class HID_arcin : public USB_HID { - private: - bool set_feature_bootloader(bootloader_report_t* report) { - switch(report->func) { - case 0: - return true; - - case 0x10: // Reset to bootloader - do_reset_bootloader = true; - return true; - - case 0x20: // Reset to runtime - do_reset = true; - return true; - - default: - return false; - } - } - - bool set_feature_config(config_report_t* report) { - if(report->segment != 0) { - return false; - } - - configloader.write(report->size, report->data); - - return true; - } - - bool get_feature_config() { - config_report_t report = {0xc0, 0, sizeof(config)}; - - memcpy(report.data, &config, sizeof(config)); - - usb.write(0, (uint32_t*)&report, sizeof(report)); - - return true; - } - - public: - HID_arcin(USB_generic& usbd, desc_t rdesc) : USB_HID(usbd, rdesc, 0, 1, 64) {} - - protected: - virtual bool set_output_report(uint32_t* buf, uint32_t len) { - if(len != sizeof(output_report_t)) { - return false; - } - - output_report_t* report = (output_report_t*)buf; - - last_led_time = Time::time(); - button_leds.set(report->leds); - return true; - } - - virtual bool set_feature_report(uint32_t* buf, uint32_t len) { - switch(*buf & 0xff) { - case 0xb0: - if(len != sizeof(bootloader_report_t)) { - return false; - } - - return set_feature_bootloader((bootloader_report_t*)buf); - - case 0xc0: - if(len != sizeof(config_report_t)) { - return false; - } - - return set_feature_config((config_report_t*)buf); - - default: - return false; - } - } - - virtual bool get_feature_report(uint8_t report_id) { - switch(report_id) { - case 0xc0: - return get_feature_config(); - - default: - return false; - } - } -}; - -HID_arcin usb_hid(usb, report_desc_p); - -uint32_t serial_num() { - uint32_t* uid = (uint32_t*)0x1ffff7ac; - - return uid[0] * uid[1] * uid[2]; -} - -class USB_strings : public USB_class_driver { - private: - USB_generic& usb; - - public: - USB_strings(USB_generic& usbd) : usb(usbd) { - usb.register_driver(this); - } - - protected: - virtual SetupStatus handle_setup(uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength) { - // Get string descriptor. - if(bmRequestType == 0x80 && bRequest == 0x06 && (wValue & 0xff00) == 0x0300) { - const void* desc = nullptr; - uint16_t buf[64] = {0x300}; - uint32_t i = 1; - - switch(wValue & 0xff) { - case 0: - desc = u"\u0304\u0409"; - break; - - case 1: - desc = u"\u0308zyp"; - break; - - case 2: - for(const char* p = "arcin"; *p; p++) { - buf[i++] = *p; - } - - if(config.label[0]) { - buf[i++] = ' '; - buf[i++] = '('; - - for(uint8_t* p = config.label; *p; p++) { - buf[i++] = *p; - } - - buf[i++] = ')'; - } - - buf[0] |= i * 2; - - desc = buf; - break; - - case 3: - { - buf[0] = 0x0312; - uint32_t id = serial_num(); - for(int i = 8; i > 0; i--) { - buf[i] = (id & 0xf) > 9 ? 'A' + (id & 0xf) - 0xa : '0' + (id & 0xf); - id >>= 4; - } - desc = buf; - } - break; - } - - if(!desc) { - return SetupStatus::Unhandled; - } - - uint8_t len = *(uint8_t*)desc; - - if(len > wLength) { - len = wLength; - } - - usb.write(0, (uint32_t*)desc, len); - - return SetupStatus::Ok; - } - - return SetupStatus::Unhandled; - } -}; - -USB_strings usb_strings(usb); - -int main() { - rcc_init(); - - // Initialize system timer. - STK.LOAD = 72000000 / 8 / 1000; // 1000 Hz. - STK.CTRL = 0x03; - - // Load config. - configloader.read(sizeof(config), &config); - - RCC.enable(RCC.GPIOA); - RCC.enable(RCC.GPIOB); - RCC.enable(RCC.GPIOC); - - usb_dm.set_mode(Pin::AF); - usb_dm.set_af(14); - usb_dp.set_mode(Pin::AF); - usb_dp.set_af(14); - - RCC.enable(RCC.USB); - - usb.init(); - - usb_pu.set_mode(Pin::Output); - usb_pu.on(); - - button_inputs.set_mode(Pin::Input); - button_inputs.set_pull(Pin::PullUp); - - button_leds.set_mode(Pin::Output); - - led1.set_mode(Pin::Output); - led1.on(); - - led2.set_mode(Pin::Output); - led2.on(); - - RCC.enable(RCC.TIM2); - RCC.enable(RCC.TIM3); - - if(!(config.flags & (1 << 1))) { - TIM2.CCER = 1 << 1; - } - - TIM2.CCMR1 = (1 << 8) | (1 << 0); - TIM2.SMCR = 3; - TIM2.CR1 = 1; - - if(config.qe1_sens < 0) { - TIM2.ARR = 256 * -config.qe1_sens - 1; - } else { - TIM2.ARR = 256 - 1; - } - - if(!(config.flags & (1 << 2))) { - TIM3.CCER = 1 << 1; - } - - TIM3.CCMR1 = (1 << 8) | (1 << 0); - TIM3.SMCR = 3; - TIM3.CR1 = 1; - - if(config.qe2_sens < 0) { - TIM3.ARR = 256 * -config.qe2_sens - 1; - } else { - TIM3.ARR = 256 - 1; - } - - qe1a.set_af(1); - qe1b.set_af(1); - qe1a.set_mode(Pin::AF); - qe1b.set_mode(Pin::AF); - - qe2a.set_af(2); - qe2b.set_af(2); - qe2a.set_mode(Pin::AF); - qe2b.set_mode(Pin::AF); - - uint8_t last_x = 0; - uint8_t last_y = 0; - - int8_t state_x = 0; - int8_t state_y = 0; - - while(1) { - usb.process(); - - uint16_t buttons = button_inputs.get() ^ 0x7ff; - - if(do_reset_bootloader) { - Time::sleep(10); - reset_bootloader(); - } - - if(do_reset) { - Time::sleep(10); - reset(); - } - - if(Time::time() - last_led_time > 1000) { - button_leds.set(buttons); - } - - if(usb.ep_ready(1)) { - uint32_t qe1_count = TIM2.CNT; - uint32_t qe2_count = TIM3.CNT; - - int8_t rx = qe1_count - last_x; - int8_t ry = qe2_count - last_y; - - if(rx > 1) { - state_x = 100; - last_x = qe1_count; - } else if(rx < -1) { - state_x = -100; - last_x = qe1_count; - } else if(state_x > 0) { - state_x--; - last_x = qe1_count; - } else if(state_x < 0) { - state_x++; - last_x = qe1_count; - } - - if(ry > 1) { - state_y = 100; - last_y = qe2_count; - } else if(ry < -1) { - state_y = -100; - last_y = qe2_count; - } else if(state_y > 0) { - state_y--; - last_y = qe2_count; - } else if(state_y < 0) { - state_y++; - last_y = qe2_count; - } - - if(state_x > 0) { - buttons |= 1 << 11; - } else if(state_x < 0) { - buttons |= 1 << 12; - } - - if(state_y > 0) { - buttons |= 1 << 13; - } else if(state_y < 0) { - buttons |= 1 << 14; - } - - if(config.qe1_sens < 0) { - qe1_count /= -config.qe1_sens; - } else if(config.qe1_sens > 0) { - qe1_count *= config.qe1_sens; - } - - if(config.qe2_sens < 0) { - qe2_count /= -config.qe2_sens; - } else if(config.qe2_sens > 0) { - qe2_count *= config.qe2_sens; - } - - input_report_t report = {1, buttons, uint8_t(qe1_count), uint8_t(qe2_count)}; - - usb.write(1, (uint32_t*)&report, sizeof(report)); - } - } -} |