117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
#include "st75256_lcd.h"
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uint8_t jlx_25664_init_sequence[] = {
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0x00, 0x30, // Extension command EXT[1:0] = 0,0
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0x00, 0x94, // Set power save mode, SLP = 0
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0x00, 0x31, // Extension command EXT[1:0] = 0,1
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0x01, 0xD7, 0x9F, // Set auto-read instruction, XARD = 1
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0x03, 0x32, 0x00, 0x01, 0x03, // 32 - Set analog circuit, BE[1:0] = 0,1; BS[2:0] = 0,1,1
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0x10, 0x20, 0x00, 0x00, 0x00, 0x0B, 0x0B, 0x0B, 0x00, 0x00, 0x10, 0x00, 0x00, 0x10, 0x10, 0x10, 0x00, 0x00, // 31 - Set grey scale level
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0x04, 0xF0, 0x0D, 0x0D, 0x0D, 0x0D, // Frame rate, 0x0C - 69.0Hz
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0x00, 0x30, // Extension command EXT[1:0] = 0,0
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0x02, 0x75, 0x00, 0x14, // 7 - Set page address, YS = 0x00, YE = 0x14
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0x02, 0x15, 0x00, 0xFF, // 8 - Set column address, XS = 0x00, XE = 0xFF
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0x01, 0xBC, 0x00, // 9 - Data scan direction, MV = 0, MX = 0, MY = 0
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0x03, 0xCA, 0x00, 0x9F, 0x20, // 5 - Display control, CLD = 0(not divide), DT = 0x9F(128), LF[4:0] = 1,0,0,0,0(16); FL = 0
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0x01, 0xF0, 0x10, // 28 - Display mode: DM = 0(Mono)
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0x02, 0x81, 0x36, 0x04, // 21 - Set VOP, VOP = 0x136
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0x01, 0x20, 0x0B // 20 - Power control, VB = 1, VF = 1, VR = 1
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};
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st75256_ret_t _st75256_hardware_reset(st75256_t *lcd) {
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ST75256_ERROR_CHECK(lcd->cb.reset_cb(lcd->user_data));
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return ST75256_OK;
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}
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st75256_ret_t _st75256_init_seq(st75256_t *lcd) {
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uint16_t i = 0;
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while(i < sizeof(ST75256_PANEL_SELECTION)) {
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &ST75256_PANEL_SELECTION[i + 1], ST75256_PANEL_SELECTION[i] + 1));
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i += ST75256_PANEL_SELECTION[i] + 2;
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}
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return ST75256_OK;
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}
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st75256_ret_t _st75256_display_on(st75256_t *lcd) {
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uint8_t cmd = 0x30;
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd, 0x01));
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cmd = 0xAF;
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd, 0x01));
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return ST75256_OK;
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}
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st75256_ret_t _st75256_cursor(st75256_t *lcd, uint8_t column_start, uint8_t column_end, uint8_t page_start, uint8_t page_end) {
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uint8_t cmd[] = { 0x30, 0x15, column_start, column_end, 0x75, page_start, page_end };
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, cmd, 0x01)); // Extension command EXT[1:0] = 0,0
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd[1], 0x03));
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd[4], 0x03));
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return ST75256_OK;
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}
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st75256_ret_t st75256_init(st75256_t *lcd) {
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ST75256_ERROR_CHECK(_st75256_hardware_reset(lcd));
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ST75256_ERROR_CHECK(_st75256_init_seq(lcd));
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ST75256_ERROR_CHECK(lcd->cb.delay_cb(lcd->user_data, 200));
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ST75256_ERROR_CHECK(_st75256_display_on(lcd));
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return ST75256_OK;
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}
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st75256_ret_t st75256_set_contrast(st75256_t *lcd, uint16_t contrast) {
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uint8_t cmd[3] = { 0x81, contrast & 0x3F, (contrast >> 6U) & 0x07 };
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, cmd, 0x03));
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return ST75256_OK;
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}
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st75256_ret_t st75256_set_mode(st75256_t *lcd, st75256_mode_t mode) {
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uint8_t cmd[2] = { 0xF0, 0x10 };
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if(mode == ST75256_GREY) {
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cmd[1] |= 0x01;
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}
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, cmd, 0x02));
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lcd->mode = mode;
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return ST75256_OK;
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}
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st75256_ret_t st75256_upload_data(st75256_t *lcd, uint8_t *data, uint8_t x_start, uint8_t x_end, uint8_t y_start, uint8_t y_end) {
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uint8_t cmd = 0x30;
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd, 0x01)); // Ext. Command 1
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uint32_t bytes_to_transfer = 0x00;
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uint8_t page_offset = (lcd->mode == ST75256_GREY ? 8 : 4);
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uint8_t page_start = page_offset;
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uint8_t page_end = page_offset;
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if(lcd->mode == ST75256_GREY) {
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if(y_start % 4 != 0 || (y_end + 1) % 4 != 0) {
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return ST75256_ERROR;
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}
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bytes_to_transfer = (x_end - x_start + 1) * (y_end - y_start + 1) / 4;
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page_start += y_start / 4;
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page_end += y_end / 4;
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}
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else {
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if(y_start % 8 != 0 || (y_end + 1) % 8 != 0) {
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return ST75256_ERROR;
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}
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bytes_to_transfer = (x_end - x_start + 1) * (y_end - y_start + 1) / 8;
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page_start += y_start / 8;
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page_end += y_end / 8;
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}
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ST75256_ERROR_CHECK(_st75256_cursor(lcd, x_start, x_end, page_start, page_end));
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cmd = 0x5C;
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ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd, 0x01)); // Write data
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ST75256_ERROR_CHECK(lcd->cb.write_data_cb(lcd->user_data, data, (uint16_t)bytes_to_transfer));
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return ST75256_OK;
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} |