zenermerps/lvgl_esp32_drivers
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xpt2048 add option for using only touch pressure and ignoring IRQ

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This commit is contained in:
Christopher Liebman 2020-12-25 12:42:01 -08:00
parent 0fc057b22c
commit c445eca696
3 changed files with 22 additions and 7 deletions
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11
lvgl_touch/Kconfig
View file

@ -99,7 +99,6 @@ menu "LVGL Touch controller"
range 0 39
default 35 if LV_PREDEFINED_PINS_38V1
default 19
help
Configure the touchpanel MISO pin here.
@ -109,7 +108,6 @@ menu "LVGL Touch controller"
range 0 39
default 32 if LV_PREDEFINED_PINS_38V1
default 23
help
Configure the touchpanel MOSI pin here.
@ -135,7 +133,7 @@ menu "LVGL Touch controller"
default 27 if LV_PREDEFINED_PINS_38V4
default 25
help
Configure the touchpanel CS pin here.
Configure the touchpanel IRQ pin here.
endmenu
menu "Touchpanel Configuration (XPT2046)"
@ -180,10 +178,17 @@ menu "LVGL Touch controller"
prompt "Invert Y coordinate value."
default y
config LV_TOUCH_CHECK
bool
prompt "Check touch pressure to validate LV_TOUCH_PIN_IRQ"
default n
config LV_TOUCH_ONLY
bool
prompt "Only use touch pressure and not IRQ to detect a touch"
depends on LV_TOUCH_CHECK
default n
endmenu
menu "Touchpanel (FT6X06) Pin Assignments"

12
lvgl_touch/xpt2046.c
View file

@ -55,6 +55,9 @@ uint8_t avg_last;
*/
void xpt2046_init(void)
{
ESP_LOGI(TAG, "XPT2046 Initialization");
#if XPT2046_TOUCH_ONLY == 0
gpio_config_t irq_config = {
.pin_bit_mask = BIT64(XPT2046_IRQ),
.mode = GPIO_MODE_INPUT,
@ -63,10 +66,9 @@ void xpt2046_init(void)
.intr_type = GPIO_INTR_DISABLE,
};
ESP_LOGI(TAG, "XPT2046 Initialization");
esp_err_t ret = gpio_config(&irq_config);
assert(ret == ESP_OK);
#endif
}
/**
@ -82,10 +84,11 @@ bool xpt2046_read(lv_indev_drv_t * drv, lv_indev_data_t * data)
int16_t x = last_x;
int16_t y = last_y;
#if XPT2046_TOUCH_ONLY == 0
uint8_t irq = gpio_get_level(XPT2046_IRQ);
if (irq == 0) {
#endif
#if XPT2046_TOUCH_CHECK != 0
int16_t z1 = xpt2046_cmd(CMD_Z1_READ) >> 3;
int16_t z2 = xpt2046_cmd(CMD_Z2_READ) >> 3;
@ -119,8 +122,9 @@ bool xpt2046_read(lv_indev_drv_t * drv, lv_indev_data_t * data)
#if XPT2046_TOUCH_CHECK != 0
}
#endif
#if XPT2046_TOUCH_ONLY == 0
}
#endif
if (!valid)
{
avg_last = 0;

6
lvgl_touch/xpt2046.h
View file

@ -36,6 +36,12 @@ extern "C" {
#define XPT2046_Y_INV CONFIG_LV_TOUCH_INVERT_Y
#define XPT2046_XY_SWAP CONFIG_LV_TOUCH_XY_SWAP
#define XPT2046_TOUCH_CHECK CONFIG_LV_TOUCH_CHECK
#if defined(CONFIG_LV_TOUCH_ONLY)
#define XPT2046_TOUCH_ONLY CONFIG_LV_TOUCH_ONLY
#else
#define XPT2046_TOUCH_ONLY 0
#endif
/**********************
* TYPEDEFS
**********************/