Device migrations, driver migrations and more (#575)
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Ken Van Hoeylandt
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cmake_minimum_required(VERSION 3.20)
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include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
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file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
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tactility_add_module(axs5106-module
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SRCS ${SOURCE_FILES}
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INCLUDE_DIRS include/
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REQUIRES TactilityKernel
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)
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@@ -0,0 +1,195 @@
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Apache License
|
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==============
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_Version 2.0, January 2004_
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@@ -0,0 +1,12 @@
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# AXS5106 touch controller
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A driver for the `AXS5106` I2C capacitive touch controller, used on the Waveshare ESP32-S3-Touch-LCD-1.47.
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Ported from the `esp_lcd_touch_axs5106` component bundled with Waveshare's official ESP-IDF factory demo firmware
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for this board (`ESP32-S3-Touch-LCD-1.47-Demo/ESP-IDF/01_factory/components/esp_lcd_touch_axs5106/esp_lcd_touch_axs5106.c`,
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downloadable from https://www.waveshare.com/wiki/ESP32-S3-Touch-LCD-1.47) - not a standalone repo.
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The original license was also Apache v2.0
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Supports up to 2 touch points.
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License: [Apache v2.0](LICENSE-Apache-2.0.md)
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@@ -0,0 +1,53 @@
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description: AXS5106 capacitive touch controller
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include: ["i2c-device.yaml"]
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compatible: "axs,axs5106"
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bus: i2c
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properties:
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x-max:
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type: int
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required: true
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description: Maximum X coordinate reported by the controller (typically the panel's horizontal resolution)
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y-max:
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type: int
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required: true
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description: Maximum Y coordinate reported by the controller (typically the panel's vertical resolution)
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swap-xy:
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type: boolean
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default: false
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description: Swap the X and Y axes
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mirror-x:
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type: boolean
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default: false
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description: Mirror the X axis
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mirror-y:
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type: boolean
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default: false
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description: Mirror the Y axis
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pin-reset:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: Reset GPIO pin
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pin-interrupt:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: Interrupt GPIO pin
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reset-active-high:
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type: boolean
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default: false
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description: Whether the reset pin is active high
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interrupt-active-high:
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type: boolean
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default: false
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description: Whether the interrupt pin is active high
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transmit-timeout:
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type: int
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default: 100
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description: Timeout (ms) for the register-address write half of a read transaction
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receive-timeout:
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type: int
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default: 100
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description: Timeout (ms) for the data-read half of a read transaction
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@@ -0,0 +1,3 @@
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dependencies:
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- TactilityKernel
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bindings: bindings
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@@ -0,0 +1,14 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <tactility/module.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern struct Module axs5106_module;
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,7 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <tactility/bindings/bindings.h>
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#include <drivers/axs5106.h>
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DEFINE_DEVICETREE(axs5106, struct Axs5106Config)
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@@ -0,0 +1,34 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <tactility/drivers/gpio.h>
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struct Axs5106Config {
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uint8_t address;
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uint16_t x_max;
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uint16_t y_max;
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bool swap_xy;
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bool mirror_x;
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bool mirror_y;
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struct GpioPinSpec pin_reset;
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struct GpioPinSpec pin_interrupt;
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bool reset_active_high;
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bool interrupt_active_high;
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// Timeout (ms) for the register-address write half of a read, and for the data-read half,
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// done as two separate I2C transactions - matches the vendor factory demo's
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// i2c_master_transmit()/i2c_master_receive() split (each with its own 100ms timeout),
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// rather than a single combined write-then-read transaction.
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uint32_t transmit_timeout_ms;
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uint32_t receive_timeout_ms;
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};
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,245 @@
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// SPDX-License-Identifier: Apache-2.0
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#include <drivers/axs5106.h>
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#include <axs5106_module.h>
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#include <tactility/check.h>
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#include <tactility/device.h>
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#include <tactility/driver.h>
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#include <tactility/drivers/gpio_controller.h>
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#include <tactility/drivers/gpio_descriptor.h>
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#include <tactility/drivers/i2c_controller.h>
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#include <tactility/drivers/pointer.h>
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#include <tactility/error.h>
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#include <tactility/log.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <cstdlib>
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constexpr auto* TAG = "AXS5106";
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#define GET_CONFIG(device) (static_cast<const Axs5106Config*>((device)->config))
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// Register map and read/reset logic ported from the vendor factory demo
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// (ESP32-S3-Touch-LCD-1.47-Demo/ESP-IDF/01_factory/components/esp_lcd_touch_axs5106), which talks
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// to the chip directly over I2C rather than through esp_lcd_panel_io/esp_lcd_touch - that indirection
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// is what the previous version of this driver used, and reads through it consistently failed with
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// ESP_FAIL on real hardware.
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static constexpr uint8_t REG_TOUCH_POINTS = 0x01;
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static constexpr uint8_t TOUCH_DATA_LEN = 14;
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static constexpr uint8_t MAX_POINTS = 2;
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struct Axs5106Internal {
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GpioDescriptor* reset_descriptor;
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bool swap_xy;
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bool mirror_x;
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bool mirror_y;
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uint8_t point_count;
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uint16_t x[MAX_POINTS];
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uint16_t y[MAX_POINTS];
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};
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// region Driver lifecycle
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// Matches the vendor demo's touch_axs5106_reset(): pulse the reset pin active for 10ms, then
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// release it for 10ms before any I2C traffic. No separate init step follows - the vendor demo's
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// touch_axs5106_init() is a no-op too.
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static error_t reset_pulse(GpioDescriptor* descriptor, bool active_high) {
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bool idle_level = !active_high;
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bool ok = gpio_descriptor_set_flags(descriptor, GPIO_FLAG_DIRECTION_OUTPUT) == ERROR_NONE;
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ok = ok && gpio_descriptor_set_level(descriptor, active_high) == ERROR_NONE;
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||||
vTaskDelay(pdMS_TO_TICKS(10));
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||||
ok = ok && gpio_descriptor_set_level(descriptor, idle_level) == ERROR_NONE;
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vTaskDelay(pdMS_TO_TICKS(10));
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||||
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||||
return ok ? ERROR_NONE : ERROR_RESOURCE;
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||||
}
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||||
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||||
static error_t start(Device* device) {
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||||
auto* parent = device_get_parent(device);
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||||
check(device_get_type(parent) == &I2C_CONTROLLER_TYPE);
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||||
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||||
const auto* config = GET_CONFIG(device);
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||||
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||||
auto* internal = static_cast<Axs5106Internal*>(malloc(sizeof(Axs5106Internal)));
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||||
if (internal == nullptr) {
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||||
return ERROR_OUT_OF_MEMORY;
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||||
}
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||||
internal->reset_descriptor = nullptr;
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||||
internal->swap_xy = config->swap_xy;
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||||
internal->mirror_x = config->mirror_x;
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||||
internal->mirror_y = config->mirror_y;
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internal->point_count = 0;
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||||
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if (config->pin_reset.gpio_controller != nullptr) {
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internal->reset_descriptor = gpio_descriptor_acquire(config->pin_reset.gpio_controller, config->pin_reset.pin, GPIO_OWNER_GPIO);
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||||
if (internal->reset_descriptor == nullptr) {
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LOG_E(TAG, "Failed to acquire reset pin");
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||||
free(internal);
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||||
return ERROR_RESOURCE;
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||||
}
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||||
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||||
if (reset_pulse(internal->reset_descriptor, config->reset_active_high) != ERROR_NONE) {
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||||
LOG_E(TAG, "Failed to pulse reset pin");
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||||
gpio_descriptor_release(internal->reset_descriptor);
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||||
free(internal);
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||||
return ERROR_RESOURCE;
|
||||
}
|
||||
}
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||||
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||||
device_set_driver_data(device, internal);
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||||
return ERROR_NONE;
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||||
}
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||||
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||||
static error_t stop(Device* device) {
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||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
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||||
if (internal->reset_descriptor != nullptr) {
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||||
gpio_descriptor_release(internal->reset_descriptor);
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||||
}
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||||
|
||||
free(internal);
|
||||
device_set_driver_data(device, nullptr);
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||||
return ERROR_NONE;
|
||||
}
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||||
|
||||
// endregion
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||||
|
||||
// region PointerApi
|
||||
|
||||
static error_t axs5106_read_data(Device* device, TickType_t) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
const auto* config = GET_CONFIG(device);
|
||||
auto* parent = device_get_parent(device);
|
||||
|
||||
// Matches the vendor demo's touch_axs5106_i2c_read(): the register address write and the
|
||||
// data read are two separate transactions (i2c_master_transmit() then i2c_master_receive()),
|
||||
// not a single write-then-read transaction with a repeated start.
|
||||
uint8_t reg = REG_TOUCH_POINTS;
|
||||
error_t error = i2c_controller_write(parent, config->address, ®, 1, pdMS_TO_TICKS(config->transmit_timeout_ms));
|
||||
if (error != ERROR_NONE) {
|
||||
return error;
|
||||
}
|
||||
|
||||
uint8_t data[TOUCH_DATA_LEN];
|
||||
error = i2c_controller_read(parent, config->address, data, sizeof(data), pdMS_TO_TICKS(config->receive_timeout_ms));
|
||||
if (error != ERROR_NONE) {
|
||||
return error;
|
||||
}
|
||||
|
||||
uint8_t points = data[1] & 0x0F;
|
||||
if (points > MAX_POINTS) {
|
||||
points = MAX_POINTS;
|
||||
}
|
||||
internal->point_count = points;
|
||||
|
||||
for (uint8_t i = 0; i < points; i++) {
|
||||
internal->y[i] = static_cast<uint16_t>(((data[4 + i * 6] & 0x0F) << 8) | data[5 + i * 6]);
|
||||
internal->x[i] = static_cast<uint16_t>(((data[2 + i * 6] & 0x0F) << 8) | data[3 + i * 6]);
|
||||
}
|
||||
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static bool axs5106_get_touched_points(Device* device, uint16_t* x, uint16_t* y, uint16_t* strength, uint8_t* point_count, uint8_t max_point_count) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
const auto* config = GET_CONFIG(device);
|
||||
|
||||
uint8_t count = internal->point_count;
|
||||
if (count > max_point_count) {
|
||||
count = max_point_count;
|
||||
}
|
||||
|
||||
// Order matches esp_lcd_touch's own software coordinate adjustment (mirror X, mirror Y,
|
||||
// then swap) so behavior lines up with the other touch modules in this codebase.
|
||||
for (uint8_t i = 0; i < count; i++) {
|
||||
uint16_t point_x = internal->x[i];
|
||||
uint16_t point_y = internal->y[i];
|
||||
if (internal->mirror_x) {
|
||||
point_x = config->x_max - point_x;
|
||||
}
|
||||
if (internal->mirror_y) {
|
||||
point_y = config->y_max - point_y;
|
||||
}
|
||||
if (internal->swap_xy) {
|
||||
uint16_t tmp = point_x;
|
||||
point_x = point_y;
|
||||
point_y = tmp;
|
||||
}
|
||||
x[i] = point_x;
|
||||
y[i] = point_y;
|
||||
if (strength != nullptr) {
|
||||
strength[i] = 0;
|
||||
}
|
||||
|
||||
LOG_I(TAG, "%d, %d", point_x, point_y);
|
||||
}
|
||||
|
||||
*point_count = count;
|
||||
return count > 0;
|
||||
}
|
||||
|
||||
static error_t axs5106_set_swap_xy(Device* device, bool swap) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
internal->swap_xy = swap;
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t axs5106_get_swap_xy(Device* device, bool* swap) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
*swap = internal->swap_xy;
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t axs5106_set_mirror_x(Device* device, bool mirror) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
internal->mirror_x = mirror;
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t axs5106_get_mirror_x(Device* device, bool* mirror) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
*mirror = internal->mirror_x;
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t axs5106_set_mirror_y(Device* device, bool mirror) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
internal->mirror_y = mirror;
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t axs5106_get_mirror_y(Device* device, bool* mirror) {
|
||||
auto* internal = static_cast<Axs5106Internal*>(device_get_driver_data(device));
|
||||
*mirror = internal->mirror_y;
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
// endregion
|
||||
|
||||
static const PointerApi axs5106_pointer_api = {
|
||||
// Unsupported (null per PointerApi's contract): neither the vendor demo nor the original
|
||||
// esp_lcd_touch component implements a sleep mode for this chip.
|
||||
.enter_sleep = nullptr,
|
||||
.exit_sleep = nullptr,
|
||||
.read_data = axs5106_read_data,
|
||||
.get_touched_points = axs5106_get_touched_points,
|
||||
.set_swap_xy = axs5106_set_swap_xy,
|
||||
.get_swap_xy = axs5106_get_swap_xy,
|
||||
.set_mirror_x = axs5106_set_mirror_x,
|
||||
.get_mirror_x = axs5106_get_mirror_x,
|
||||
.set_mirror_y = axs5106_set_mirror_y,
|
||||
.get_mirror_y = axs5106_get_mirror_y,
|
||||
};
|
||||
|
||||
Driver axs5106_driver = {
|
||||
.name = "axs5106",
|
||||
.compatible = (const char*[]) { "axs,axs5106", nullptr },
|
||||
.start_device = start,
|
||||
.stop_device = stop,
|
||||
.api = &axs5106_pointer_api,
|
||||
.device_type = &POINTER_TYPE,
|
||||
.owner = &axs5106_module,
|
||||
.internal = nullptr
|
||||
};
|
||||
@@ -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 axs5106_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(&axs5106_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(&axs5106_driver) == ERROR_NONE);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
Module axs5106_module = {
|
||||
.name = "axs5106",
|
||||
.start = start,
|
||||
.stop = stop,
|
||||
.symbols = nullptr,
|
||||
.internal = nullptr
|
||||
};
|
||||
|
||||
} // extern "C"
|
||||
Reference in New Issue
Block a user