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Crowpanel Advance converted + TCA9534 driver

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This commit is contained in:
Ken Van Hoeylandt 2026-07-15 08:33:39 +02:00
parent deb2bd787c
commit 41c5f4843b
18 changed files with 539 additions and 149 deletions
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6
Devices/elecrow-crowpanel-advance-50/CMakeLists.txt
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@ -1,7 +1,7 @@
file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
file(GLOB_RECURSE SOURCE_FILES source/*.c*)
idf_component_register(
SRCS ${SOURCE_FILES}
INCLUDE_DIRS "Source"
REQUIRES Tactility esp_lvgl_port RgbDisplay GT911 TCA9534 driver
INCLUDE_DIRS "source"
REQUIRES Tactility
)

32
Devices/elecrow-crowpanel-advance-50/Source/Configuration.cpp
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@ -1,32 +0,0 @@
#include "devices/Display.h"
#include <Tactility/hal/Configuration.h>
#include <TCA9534.h>
using namespace tt::hal;
static bool initBoot() {
TCA9534_IO_EXP io_expander = {
.I2C_ADDR = 0x18,
.i2c_master_port = I2C_NUM_0,
.interrupt_pin = GPIO_NUM_NC,
.interrupt_task = nullptr
};
// Enable LCD backlight
set_tca9534_io_pin_direction(&io_expander, TCA9534_IO1, TCA9534_OUTPUT);
set_tca9534_io_pin_output_state(&io_expander, TCA9534_IO1, 255);
return true;
}
static DeviceVector createDevices() {
return {
createDisplay(),
};
}
extern const Configuration hardwareConfiguration = {
.initBoot = initBoot,
.createDevices = createDevices
};

106
Devices/elecrow-crowpanel-advance-50/Source/devices/Display.cpp
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@ -1,106 +0,0 @@
#include "Display.h"
#include <Gt911Touch.h>
#include <RgbDisplay.h>
#include <tactility/check.h>
#include <tactility/device.h>
std::shared_ptr<tt::hal::touch::TouchDevice> createTouch() {
// Note for future changes: Reset pin is 38 and interrupt pin is 18
// or INT = NC, schematic and other info floating around is kinda conflicting...
auto* i2c = device_find_by_name("i2c0");
check(i2c);
auto configuration = std::make_unique<Gt911Touch::Configuration>(
i2c,
800,
480
);
return std::make_shared<Gt911Touch>(std::move(configuration));
}
std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay() {
auto touch = createTouch();
constexpr uint32_t bufferPixels = 800 * 10;
esp_lcd_rgb_panel_config_t rgb_panel_config = {
.clk_src = LCD_CLK_SRC_DEFAULT,
.timings = {
.pclk_hz = 15000000, // TODO: 21 MHz was too much and caused drift when opening wifi/SD/apps. Try something inbetween 15 and 21 MHz.
.h_res = 800,
.v_res = 480,
.hsync_pulse_width = 4,
.hsync_back_porch = 8,
.hsync_front_porch = 8,
.vsync_pulse_width = 4,
.vsync_back_porch = 8,
.vsync_front_porch = 8,
.flags = {
.hsync_idle_low = false,
.vsync_idle_low = false,
.de_idle_high = false,
.pclk_active_neg = true,
.pclk_idle_high = false
}
},
.data_width = 16,
.bits_per_pixel = 0,
.num_fbs = 2,
.bounce_buffer_size_px = bufferPixels,
.sram_trans_align = 8,
.psram_trans_align = 64,
.hsync_gpio_num = GPIO_NUM_40,
.vsync_gpio_num = GPIO_NUM_41,
.de_gpio_num = GPIO_NUM_42 ,
.pclk_gpio_num = GPIO_NUM_39,
.disp_gpio_num = GPIO_NUM_NC,
.data_gpio_nums = {
GPIO_NUM_21, // B3
GPIO_NUM_47, // B4
GPIO_NUM_48, // B5
GPIO_NUM_45, // B6
GPIO_NUM_38, // B7
GPIO_NUM_9, // G2
GPIO_NUM_10, // G3
GPIO_NUM_11, // G4
GPIO_NUM_12, // G5
GPIO_NUM_13, // G6
GPIO_NUM_14, // G7
GPIO_NUM_7, // R3
GPIO_NUM_17, // R4
GPIO_NUM_18, // R5
GPIO_NUM_3, // R6
GPIO_NUM_46, // R7
},
.flags = {
.disp_active_low = false,
.refresh_on_demand = false,
.fb_in_psram = true,
.double_fb = true,
.no_fb = false,
.bb_invalidate_cache = false
}
};
RgbDisplay::BufferConfiguration buffer_config = {
.size = (800 * 480),
.useSpi = true,
.doubleBuffer = true,
.bounceBufferMode = true,
.avoidTearing = false
};
auto configuration = std::make_unique<RgbDisplay::Configuration>(
rgb_panel_config,
buffer_config,
touch,
LV_COLOR_FORMAT_RGB565,
false,
false,
false,
false
);
return std::make_shared<RgbDisplay>(std::move(configuration));
}

5
Devices/elecrow-crowpanel-advance-50/Source/devices/Display.h
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@ -1,5 +0,0 @@
#pragma once
#include <Tactility/hal/display/DisplayDevice.h>
std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay();

2
Devices/elecrow-crowpanel-advance-50/device.properties
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@ -12,6 +12,8 @@ hardware.tinyUsb=true
hardware.esptoolFlashFreq=120M
hardware.bluetooth=true
dependencies.useDeprecatedHal=false
storage.userDataLocation=SD
display.size=5"

3
Devices/elecrow-crowpanel-advance-50/devicetree.yaml
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@ -1,3 +1,6 @@
dependencies:
- Platforms/platform-esp32
- Drivers/rgb-display-module
- Drivers/gt911-module
- Drivers/tca9534-module
dts: elecrow,crowpanel-advance-50.dts

62
Devices/elecrow-crowpanel-advance-50/elecrow,crowpanel-advance-50.dts
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@ -8,6 +8,10 @@
#include <tactility/bindings/esp32_spi.h>
#include <tactility/bindings/esp32_uart.h>
#include <tactility/bindings/esp32_sdspi.h>
#include <tactility/bindings/esp32_gpio_backlight.h>
#include <bindings/rgb_display.h>
#include <bindings/gt911.h>
#include <bindings/tca9534.h>
/ {
compatible = "root";
@ -34,6 +38,21 @@
clock-frequency = <400000>;
pin-sda = <&gpio0 15 GPIO_FLAG_NONE>;
pin-scl = <&gpio0 16 GPIO_FLAG_NONE>;
io_expander0 {
compatible = "ti,tca9534";
reg = <0x18>;
};
touch0 {
// Reset pin 38 and interrupt pin 18 (or INT = NC) exist on the board but are not
// wired up here - conflicting schematic info, unverified (matches the original
// deprecated-HAL config).
compatible = "goodix,gt911";
reg = <0x5D>;
x-max = <800>;
y-max = <480>;
};
};
spi0 {
@ -50,6 +69,49 @@
};
};
display_backlight {
compatible = "espressif,esp32-gpio-backlight";
pin-backlight = <&io_expander0 1 GPIO_FLAG_NONE>;
};
display0 {
compatible = "espressif,esp32-rgb-display";
horizontal-resolution = <800>;
vertical-resolution = <480>;
pixel-clock-hz = <15000000>;
hsync-pulse-width = <4>;
hsync-back-porch = <8>;
hsync-front-porch = <8>;
vsync-pulse-width = <4>;
vsync-back-porch = <8>;
vsync-front-porch = <8>;
pclk-active-neg;
num-fbs = <2>;
double-fb;
bounce-buffer-size-px = <8000>;
pin-hsync = <&gpio0 40 GPIO_FLAG_NONE>;
pin-vsync = <&gpio0 41 GPIO_FLAG_NONE>;
pin-de = <&gpio0 42 GPIO_FLAG_NONE>;
pin-pclk = <&gpio0 39 GPIO_FLAG_NONE>;
pin-data0 = <&gpio0 21 GPIO_FLAG_NONE>; // B3
pin-data1 = <&gpio0 47 GPIO_FLAG_NONE>; // B4
pin-data2 = <&gpio0 48 GPIO_FLAG_NONE>; // B5
pin-data3 = <&gpio0 45 GPIO_FLAG_NONE>; // B6
pin-data4 = <&gpio0 38 GPIO_FLAG_NONE>; // B7
pin-data5 = <&gpio0 9 GPIO_FLAG_NONE>; // G2
pin-data6 = <&gpio0 10 GPIO_FLAG_NONE>; // G3
pin-data7 = <&gpio0 11 GPIO_FLAG_NONE>; // G4
pin-data8 = <&gpio0 12 GPIO_FLAG_NONE>; // G5
pin-data9 = <&gpio0 13 GPIO_FLAG_NONE>; // G6
pin-data10 = <&gpio0 14 GPIO_FLAG_NONE>; // G7
pin-data11 = <&gpio0 7 GPIO_FLAG_NONE>; // R3
pin-data12 = <&gpio0 17 GPIO_FLAG_NONE>; // R4
pin-data13 = <&gpio0 18 GPIO_FLAG_NONE>; // R5
pin-data14 = <&gpio0 3 GPIO_FLAG_NONE>; // R6
pin-data15 = <&gpio0 46 GPIO_FLAG_NONE>; // R7
backlight = <&display_backlight>;
};
uart0 {
compatible = "espressif,esp32-uart";
port = <UART_NUM_0>;

2
Devices/elecrow-crowpanel-advance-50/Source/module.cpp → Devices/elecrow-crowpanel-advance-50/source/module.cpp
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@ -3,12 +3,10 @@
extern "C" {
static error_t start() {
// Empty for now
return ERROR_NONE;
}
static error_t stop() {
// Empty for now
return ERROR_NONE;
}

11
Drivers/tca9534-module/CMakeLists.txt Normal file
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@ -0,0 +1,11 @@
cmake_minimum_required(VERSION 3.20)
include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
tactility_add_module(tca9534-module
SRCS ${SOURCE_FILES}
INCLUDE_DIRS include/
REQUIRES TactilityKernel
)

195
Drivers/tca9534-module/LICENSE-Apache-2.0.md Normal file
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@ -0,0 +1,195 @@
Apache License
==============
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7
Drivers/tca9534-module/README.md Normal file
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@ -0,0 +1,7 @@
# TCA9534 I/O expander
A driver for the `TCA9534` 8-bit I2C-bus I/O expander by Texas Instruments.
See https://www.ti.com/product/TCA9534
License: [Apache v2.0](LICENSE-Apache-2.0.md)

5
Drivers/tca9534-module/bindings/ti,tca9534.yaml Normal file
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@ -0,0 +1,5 @@
description: TI TCA9534 8-bit I2C-bus I/O expander
include: ["i2c-device.yaml"]
compatible: "ti,tca9534"

3
Drivers/tca9534-module/devicetree.yaml Normal file
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@ -0,0 +1,3 @@
dependencies:
- TactilityKernel
bindings: bindings

15
Drivers/tca9534-module/include/bindings/tca9534.h Normal file
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@ -0,0 +1,15 @@
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <tactility/bindings/bindings.h>
#include <drivers/tca9534.h>
#ifdef __cplusplus
extern "C" {
#endif
DEFINE_DEVICETREE(tca9534, struct Tca9534Config)
#ifdef __cplusplus
}
#endif

17
Drivers/tca9534-module/include/drivers/tca9534.h Normal file
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@ -0,0 +1,17 @@
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
struct Tca9534Config {
/** Address on bus */
uint8_t address;
};
#ifdef __cplusplus
}
#endif

14
Drivers/tca9534-module/include/tca9534_module.h Normal file
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@ -0,0 +1,14 @@
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <tactility/module.h>
#ifdef __cplusplus
extern "C" {
#endif
extern struct Module tca9534_module;
#ifdef __cplusplus
}
#endif

32
Drivers/tca9534-module/source/module.cpp Normal file
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@ -0,0 +1,32 @@
// SPDX-License-Identifier: Apache-2.0
#include <tactility/check.h>
#include <tactility/driver.h>
#include <tactility/module.h>
extern "C" {
extern Driver tca9534_driver;
static error_t start() {
/* We crash when construct fails, because if a single driver fails to construct,
* there is no guarantee that the previously constructed drivers can be destroyed */
check(driver_construct_add(&tca9534_driver) == ERROR_NONE);
return ERROR_NONE;
}
static error_t stop() {
/* We crash when destruct fails, because if a single driver fails to destruct,
* there is no guarantee that the previously destroyed drivers can be recovered */
check(driver_remove_destruct(&tca9534_driver) == ERROR_NONE);
return ERROR_NONE;
}
Module tca9534_module = {
.name = "tca9534",
.start = start,
.stop = stop,
.symbols = nullptr,
.internal = nullptr
};
}

169
Drivers/tca9534-module/source/tca9534.cpp Normal file
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@ -0,0 +1,169 @@
// SPDX-License-Identifier: Apache-2.0
#include <drivers/tca9534.h>
#include <tca9534_module.h>
#include <tactility/device.h>
#include <tactility/driver.h>
#include <tactility/drivers/gpio_controller.h>
#include <tactility/drivers/gpio_descriptor.h>
#include <tactility/drivers/i2c_controller.h>
#include <tactility/log.h>
#define TAG "TCA9534"
#define GET_CONFIG(device) (static_cast<const Tca9534Config*>((device)->config))
constexpr auto TCA9534_REGISTER_INPUT = 0x00;
constexpr auto TCA9534_REGISTER_OUTPUT = 0x01;
constexpr auto TCA9534_REGISTER_POLARITY = 0x02;
constexpr auto TCA9534_REGISTER_CONFIG = 0x03;
static error_t start(Device* device) {
auto* parent = device_get_parent(device);
if (device_get_type(parent) != &I2C_CONTROLLER_TYPE) {
LOG_E(TAG, "Parent device is not I2C");
return ERROR_RESOURCE;
}
return gpio_controller_init_descriptors(device, 8, nullptr);
}
static error_t stop(Device* device) {
check(gpio_controller_deinit_descriptors(device) == ERROR_NONE);
return ERROR_NONE;
}
extern "C" {
static error_t set_level(GpioDescriptor* descriptor, bool high) {
auto* device = descriptor->controller;
auto* parent = device_get_parent(device);
auto address = GET_CONFIG(device)->address;
uint8_t bit = 1 << descriptor->pin;
return high
? i2c_controller_register8_set_bits(parent, address, TCA9534_REGISTER_OUTPUT, bit, portMAX_DELAY)
: i2c_controller_register8_reset_bits(parent, address, TCA9534_REGISTER_OUTPUT, bit, portMAX_DELAY);
}
static error_t get_level(GpioDescriptor* descriptor, bool* high) {
auto* device = descriptor->controller;
auto* parent = device_get_parent(device);
auto address = GET_CONFIG(device)->address;
uint8_t bits;
error_t err = i2c_controller_register8_get(parent, address, TCA9534_REGISTER_INPUT, &bits, portMAX_DELAY);
if (err != ERROR_NONE) {
return err;
}
*high = (bits & (1 << descriptor->pin)) != 0;
return ERROR_NONE;
}
static error_t set_flags(GpioDescriptor* descriptor, gpio_flags_t flags) {
// The TCA9534 only supports direction and polarity inversion. Pull-up/down and
// high-impedance are not present in its register map.
if (flags & (GPIO_FLAG_PULL_UP | GPIO_FLAG_PULL_DOWN | GPIO_FLAG_HIGH_IMPEDANCE)) {
return ERROR_NOT_SUPPORTED;
}
// The polarity register only inverts what's read back from an input pin;
// set_level() still drives outputs at the raw level. Accepting ACTIVE_LOW
// on an output would silently not do what it implies.
if ((flags & GPIO_FLAG_ACTIVE_LOW) && (flags & GPIO_FLAG_DIRECTION_OUTPUT)) {
return ERROR_NOT_SUPPORTED;
}
auto* device = descriptor->controller;
auto* parent = device_get_parent(device);
auto address = GET_CONFIG(device)->address;
uint8_t bit = 1 << descriptor->pin;
error_t err;
// Direction: configuration bit is 1 for input, 0 for output.
if (flags & GPIO_FLAG_DIRECTION_OUTPUT) {
err = i2c_controller_register8_reset_bits(parent, address, TCA9534_REGISTER_CONFIG, bit, portMAX_DELAY);
} else {
err = i2c_controller_register8_set_bits(parent, address, TCA9534_REGISTER_CONFIG, bit, portMAX_DELAY);
}
if (err != ERROR_NONE) {
return err;
}
// Polarity inversion (mainly relevant for active-low inputs).
if (flags & GPIO_FLAG_ACTIVE_LOW) {
err = i2c_controller_register8_set_bits(parent, address, TCA9534_REGISTER_POLARITY, bit, portMAX_DELAY);
} else {
err = i2c_controller_register8_reset_bits(parent, address, TCA9534_REGISTER_POLARITY, bit, portMAX_DELAY);
}
return err;
}
static error_t get_flags(GpioDescriptor* descriptor, gpio_flags_t* flags) {
auto* device = descriptor->controller;
auto* parent = device_get_parent(device);
auto address = GET_CONFIG(device)->address;
uint8_t bit = 1 << descriptor->pin;
uint8_t val;
error_t err;
gpio_flags_t f = GPIO_FLAG_NONE;
err = i2c_controller_register8_get(parent, address, TCA9534_REGISTER_CONFIG, &val, portMAX_DELAY);
if (err != ERROR_NONE) return err;
f |= (val & bit) ? GPIO_FLAG_DIRECTION_INPUT : GPIO_FLAG_DIRECTION_OUTPUT;
err = i2c_controller_register8_get(parent, address, TCA9534_REGISTER_POLARITY, &val, portMAX_DELAY);
if (err != ERROR_NONE) return err;
f |= (val & bit) ? GPIO_FLAG_ACTIVE_LOW : GPIO_FLAG_ACTIVE_HIGH;
*flags = f;
return ERROR_NONE;
}
static error_t get_native_pin_number(GpioDescriptor* descriptor, void* pin_number) {
return ERROR_NOT_SUPPORTED;
}
static error_t add_callback(GpioDescriptor* descriptor, void (*callback)(void*), void* arg) {
return ERROR_NOT_SUPPORTED;
}
static error_t remove_callback(GpioDescriptor* descriptor) {
return ERROR_NOT_SUPPORTED;
}
static error_t enable_interrupt(GpioDescriptor* descriptor) {
return ERROR_NOT_SUPPORTED;
}
static error_t disable_interrupt(GpioDescriptor* descriptor) {
return ERROR_NOT_SUPPORTED;
}
const static GpioControllerApi tca9534_gpio_api = {
.set_level = set_level,
.get_level = get_level,
.set_flags = set_flags,
.get_flags = get_flags,
.get_native_pin_number = get_native_pin_number,
.add_callback = add_callback,
.remove_callback = remove_callback,
.enable_interrupt = enable_interrupt,
.disable_interrupt = disable_interrupt
};
Driver tca9534_driver = {
.name = "tca9534",
.compatible = (const char*[]) { "ti,tca9534", nullptr },
.start_device = start,
.stop_device = stop,
.api = static_cast<const void*>(&tca9534_gpio_api),
.device_type = &GPIO_CONTROLLER_TYPE,
.owner = &tca9534_module,
.internal = nullptr
};
}