183 lines
5.9 KiB
C
183 lines
5.9 KiB
C
/**
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* @file SHARP_MIP.c
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*
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*/
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/*-------------------------------------------------------------------------------------------------
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* SHARP memory in pixel monochrome display series
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* LS012B7DD01 (184x38 pixels.)
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* LS013B7DH03 (128x128 pixels.)
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* LS013B7DH05 (144x168 pixels.)
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* LS027B7DH01 (400x240 pixels.) (tested)
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* LS032B7DD02 (336x536 pixels.)
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* LS044Q7DH01 (320x240 pixels.)
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*
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* These displays need periodic com inversion, there are two ways :
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* - software com inversion :
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* define SHARP_MIP_SOFT_COM_INVERSION 1 and set EXTMODE display pin LOW,
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* call sharp_mip_com_inversion() periodically
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* - hardware com inversion with EXTCOMIN display pin :
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* define SHARP_MIP_SOFT_COM_INVERSION 0,
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* set EXTMODE display pin HIGH and handle
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* EXTCOMIN waveform (for example with mcu pwm output),
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* see datasheet pages 8-12 for details
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*
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* draw_buf size : (LV_VER_RES / X) * (2 + LV_HOR_RES / 8) + 2 bytes, structure :
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* [FRAME_HEADER (1 byte)] [GATE_ADDR (1 byte )] [LINE_DATA (LV_HOR_RES / 8 bytes)] 1st line
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* [DUMMY (1 byte)] [GATE_ADDR (1 byte )] [LINE_DATA (LV_HOR_RES / 8 bytes)] 2nd line
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* ...........................................................................................
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* [DUMMY (1 byte)] [GATE_ADDR (1 byte )] [LINE_DATA (LV_HOR_RES / 8 bytes)] last line
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* [DUMMY (2 bytes)]
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*
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* Since extra bytes (dummy, addresses, header) are stored in draw_buf, we need to use
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* an "oversized" draw_buf. Buffer declaration in "lv_port_disp.c" becomes for example :
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* static lv_disp_buf_t disp_buf;
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* static uint8_t buf[(LV_VER_RES_MAX / X) * (2 + (LV_HOR_RES_MAX / 8)) + 2];
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* lv_disp_buf_init(&disp_buf, buf, NULL, LV_VER_RES_MAX * LV_HOR_RES_MAX / X);
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*-----------------------------------------------------------------------------------------------*/
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/*********************
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* INCLUDES
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*********************/
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#include "SHARP_MIP.h"
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#if USE_SHARP_MIP
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#include <stdbool.h>
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#include LV_DRV_DISP_INCLUDE
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#include LV_DRV_DELAY_INCLUDE
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/*********************
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* DEFINES
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*********************/
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#define SHARP_MIP_HEADER 0
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#define SHARP_MIP_UPDATE_RAM_FLAG (1 << 7) /* (M0) Mode flag : H -> update memory, L -> maintain memory */
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#define SHARP_MIP_COM_INVERSION_FLAG (1 << 6) /* (M1) Frame inversion flag : relevant when EXTMODE = L, */
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/* H -> outputs VCOM = H, L -> outputs VCOM = L */
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#define SHARP_MIP_CLEAR_SCREEN_FLAG (1 << 5) /* (M2) All clear flag : H -> clear all pixels */
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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/**********************
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* STATIC VARIABLES
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**********************/
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#if SHARP_MIP_SOFT_COM_INVERSION
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static bool_t com_output_state = false;
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#endif
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/**********************
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* MACROS
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**********************/
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/*
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* Return the draw_buf byte index corresponding to the pixel
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* relatives coordinates (x, y) in the area.
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* The area is rounded to a whole screen line.
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*/
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#define BUFIDX(x, y) (((x) >> 3) + ((y) * (2 + (SHARP_MIP_HOR_RES >> 3))) + 2)
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/*
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* Return the byte bitmask of a pixel bit corresponding
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* to draw_buf arrangement (8 pixels per byte on lines).
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*/
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#define PIXIDX(x) SHARP_MIP_REV_BYTE(1 << ((x) & 7))
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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void sharp_mip_init(void) {
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/* These displays have nothing to initialize */
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}
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void sharp_mip_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p) {
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/*Return if the area is out the screen*/
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if(area->y2 < 0) return;
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if(area->y1 > SHARP_MIP_VER_RES - 1) return;
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/*Truncate the area to the screen*/
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uint16_t act_y1 = area->y1 < 0 ? 0 : area->y1;
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uint16_t act_y2 = area->y2 > SHARP_MIP_VER_RES - 1 ? SHARP_MIP_VER_RES - 1 : area->y2;
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uint8_t * buf = (uint8_t *) color_p; /*Get the buffer address*/
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uint16_t buf_h = (act_y2 - act_y1 + 1); /*Number of buffer lines*/
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uint16_t buf_size = buf_h * (2 + SHARP_MIP_HOR_RES / 8) + 2; /*Buffer size in bytes */
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/* Set lines to flush dummy byte & gate address in draw_buf*/
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for(uint16_t act_y = 0 ; act_y < buf_h ; act_y++) {
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buf[BUFIDX(0, act_y) - 1] = SHARP_MIP_REV_BYTE((act_y1 + act_y + 1));
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buf[BUFIDX(0, act_y) - 2] = 0;
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}
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/* Set last dummy two bytes in draw_buf */
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buf[BUFIDX(0, buf_h) - 1] = 0;
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buf[BUFIDX(0, buf_h) - 2] = 0;
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/* Set frame header in draw_buf */
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buf[0] = SHARP_MIP_HEADER |
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SHARP_MIP_UPDATE_RAM_FLAG;
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/* Write the frame on display memory */
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LV_DRV_DISP_SPI_CS(1);
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LV_DRV_DISP_SPI_WR_ARRAY(buf, buf_size);
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LV_DRV_DISP_SPI_CS(0);
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lv_disp_flush_ready(disp_drv);
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}
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void sharp_mip_set_px(lv_disp_drv_t * disp_drv, uint8_t * buf, lv_coord_t buf_w, lv_coord_t x, lv_coord_t y, lv_color_t color, lv_opa_t opa) {
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(void) disp_drv;
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(void) buf_w;
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(void) opa;
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if (lv_color_to1(color) != 0) {
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buf[BUFIDX(x, y)] |= PIXIDX(x); /*Set draw_buf pixel bit to 1 for other colors than BLACK*/
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} else {
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buf[BUFIDX(x, y)] &= ~PIXIDX(x); /*Set draw_buf pixel bit to 0 for BLACK color*/
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}
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}
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void sharp_mip_rounder(lv_disp_drv_t * disp_drv, lv_area_t * area) {
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(void) disp_drv;
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/* Round area to a whole line */
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area->x1 = 0;
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area->x2 = SHARP_MIP_HOR_RES - 1;
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}
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#if SHARP_MIP_SOFT_COM_INVERSION
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void sharp_mip_com_inversion(void) {
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uint8_t inversion_header[2] = {0};
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/* Set inversion header */
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if (com_output_state) {
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com_output_state = false;
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} else {
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inversion_header[0] |= SHARP_MIP_COM_INVERSION_FLAG;
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com_output_state = true;
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}
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/* Write inversion header on display memory */
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LV_DRV_DISP_SPI_CS(1);
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LV_DRV_DISP_SPI_WR_ARRAY(inversion_header, 2);
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LV_DRV_DISP_SPI_CS(0);
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}
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#endif
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/**********************
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* STATIC FUNCTIONS
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**********************/
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#endif
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