lv_draw_eve_target.h

API reference for lv_draw_eve_target.h

Summary

Enums

Name	Description
`LV_DRAW_EVE_OPERATION_POWERDOWN_SET`	set the "PD_N" pin low
`LV_DRAW_EVE_OPERATION_POWERDOWN_CLEAR`	set the "PD_N" pin high
`LV_DRAW_EVE_OPERATION_CS_ASSERT`	set the "CS_N" pin low
`LV_DRAW_EVE_OPERATION_CS_DEASSERT`	set the "CS_N" pin high
`LV_DRAW_EVE_OPERATION_SPI_SEND`	send `length` bytes of `data` over SPI
`LV_DRAW_EVE_OPERATION_SPI_RECEIVE`	receive `length` bytes into `data` from SPI

struct

Member	Type	Description
`hor_res`	`uint16_t`	active display width
`ver_res`	`uint16_t`	active display height
`hcycle`	`uint16_t`	total number of clocks per line, incl front/back porch
`hoffset`	`uint16_t`	start of active line
`hsync0`	`uint16_t`	start of horizontal sync pulse
`hsync1`	`uint16_t`	end of horizontal sync pulse
`vcycle`	`uint16_t`	total number of lines per screen, including pre/post
`voffset`	`uint16_t`	start of active screen
`vsync0`	`uint16_t`	start of vertical sync pulse
`vsync1`	`uint16_t`	end of vertical sync pulse
`swizzle`	`uint8_t`	FT8xx output to LCD - pin order
`pclkpol`	`uint8_t`	LCD data is clocked in on this PCLK edge
`cspread`	`uint8_t`	helps with noise, when set to 1 fewer signals are changed simultaneously, reset-default: 1
`pclk`	`uint8_t`	60MHz / pclk = pclk frequency
`has_crystal`	`bool`	has an external clock crystal
`has_gt911`	`bool`	has a touch controller
`backlight_pwm`	`uint8_t`	backlight PWM duty cycle 0 = off, 128 = max
`backlight_freq`	`uint16_t`	backlight PWM frequency. try 4000 if unsure

Used by 2 functions

typedef void(* lv_draw_eve_operation_cb_t) (lv_display_t *disp, lv_draw_eve_operation_t operation, void *data, uint32_t length)

Used by 2 functions

Indirect dependencies