Crazypedia
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
#include "devices/Display.h"
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#include "devices/TdeckmaxKeyboard.h"
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#include <Tactility/hal/Configuration.h>
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#include <tactility/check.h>
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#include <tactility/delay.h>
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#include <tactility/device.h>
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#include <tactility/drivers/esp32_spi.h>
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#include <tactility/drivers/gpio_controller.h>
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using namespace tt::hal;
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// Reset lines routed through the XL9555 IO expander (P-numbers from the vendor
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// lib/TDeckMaxBoard/src/TDeckMaxBoard.h). Both are active low.
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constexpr auto XL9555_PIN_TOUCH_RST = 7; // P07
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constexpr auto XL9555_PIN_KEY_RST = 9; // P11
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// Release the touch and keyboard reset lines held by the XL9555. Without this
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// the touch controller may stay in a half-powered state and the keyboard's
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// TCA8418 is held in reset, so neither responds. Mirrors the vendor factory
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// firmware's XL9555 init (examples/factory/factory.ino).
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static void initIoExpander() {
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auto* xl9555 = device_find_by_name("xl9555");
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if (xl9555 == nullptr) {
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// Boot anyway; display works without the expander, but touch/keyboard won't.
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return;
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}
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auto* touch_rst = gpio_descriptor_acquire(xl9555, XL9555_PIN_TOUCH_RST, GPIO_OWNER_GPIO);
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auto* key_rst = gpio_descriptor_acquire(xl9555, XL9555_PIN_KEY_RST, GPIO_OWNER_GPIO);
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if (touch_rst != nullptr) {
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gpio_descriptor_set_flags(touch_rst, GPIO_FLAG_DIRECTION_OUTPUT);
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gpio_descriptor_set_level(touch_rst, false);
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}
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if (key_rst != nullptr) {
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gpio_descriptor_set_flags(key_rst, GPIO_FLAG_DIRECTION_OUTPUT);
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gpio_descriptor_set_level(key_rst, false);
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}
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delay_millis(20);
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// Release both resets and give the controllers time to boot before they're probed.
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if (touch_rst != nullptr) {
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gpio_descriptor_set_level(touch_rst, true);
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gpio_descriptor_release(touch_rst);
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}
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if (key_rst != nullptr) {
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gpio_descriptor_set_level(key_rst, true);
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gpio_descriptor_release(key_rst);
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}
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delay_millis(60);
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}
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static bool initBoot() {
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// The LoRa and SD chip-selects share the EPD's SPI bus but aren't wired up
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// yet. spi0's start() already drives every cs-gpio high during kernel init;
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// re-assert deselection before the EPD driver first transacts, as a cheap
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// guard against either chip latching stray EPD command bytes (same pattern
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// as the esp32_sdspi mount path).
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auto* spi0 = device_find_by_name("spi0");
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check(spi0 != nullptr);
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esp32_spi_deselect_all_cs(spi0);
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initIoExpander();
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return true;
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}
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static DeviceVector createDevices() {
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auto* i2c = device_find_by_name("i2c0");
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check(i2c != nullptr);
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// SD card is not created here: it's an espressif,esp32-sdspi node in the
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// devicetree (sdcard@1 under spi0), started by Hal::init's mountAll().
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DeviceVector devices = {
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createDisplay()
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};
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auto keypad = std::make_shared<Tca8418>(i2c);
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devices.push_back(keypad);
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devices.push_back(std::make_shared<TdeckmaxKeyboard>(keypad));
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return devices;
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}
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extern const Configuration hardwareConfiguration = {
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.initBoot = initBoot,
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.createDevices = createDevices
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};
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