From 3a9a9415d777a9dfcf2764b9101899a9f54c03ae Mon Sep 17 00:00:00 2001
From: imi415 <imi415@imi.moe>
Date: Thu, 21 Jan 2021 16:55:13 +0000
Subject: [PATCH] Initial commit.

---
 CMakeLists.txt                    | 16 ++++++++++++++
 lib/gdew0213m21/gdew0213m21_epd.c | 35 +++++++++++++++++++++++++++++++
 lib/gdew0213m21/gdew0213m21_epd.h | 28 +++++++++++++++++++++++++
 main.c                            |  8 +++++++
 4 files changed, 87 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100644 lib/gdew0213m21/gdew0213m21_epd.c
 create mode 100644 lib/gdew0213m21/gdew0213m21_epd.h
 create mode 100644 main.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..5e710f5
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.12)
+
+project(epd_lvgl C)
+
+set(CMAKE_C_STANDARD 11)
+
+set(SOURCES
+    main.c
+    lib/gdew0213m21/gdew0213m21_epd.c
+)
+
+include_directories(
+    lib/gdew0213m21
+)
+
+add_executable(epd_lvgl ${SOURCES})
\ No newline at end of file
diff --git a/lib/gdew0213m21/gdew0213m21_epd.c b/lib/gdew0213m21/gdew0213m21_epd.c
new file mode 100644
index 0000000..80cc770
--- /dev/null
+++ b/lib/gdew0213m21/gdew0213m21_epd.c
@@ -0,0 +1,35 @@
+#include "gdew0213m21_epd.h"
+
+uint8_t gdew0213m21_init_sequence[] = {
+    0x03, 0x06, 0x17, 0x17, 0x1F, // boost soft start
+    0x04, 0x01, 0x03, 0x00, 0x2B, 0x2B, // Power settings
+    0x01, 0x00, 0xBF, // Panel setting, LUT from OTP
+    0x01, 0x30, 0x3C,
+    0x03, 0x61, 0x68, 0x00, 0xD4,
+    0x01, 0x82, 0x12, // VCOM DC settings
+    0x01, 0x50, 0x47
+};
+
+des_epd_ret_t _des_epd_hardware_reset(des_epd_t *epd) {
+    //
+}
+
+des_epd_ret_t _des_epd_software_reset(des_epd_t *epd) {
+    //
+}
+
+des_epd_ret_t _des_epd_init_seq(des_epd_t *epd) {
+   uint16_t i = 0;
+    while(i < sizeof(DES_EPD_PANEL_SELECTION)) {
+        DES_EPD_ERROR_CHECK(epd->cb.write_cmd_cb(epd->user_data, &DES_EPD_PANEL_SELECTION[i + 1], DES_EPD_PANEL_SELECTION[i] + 1));
+        i += DES_EPD_PANEL_SELECTION[i] + 2;
+    }
+
+    return DES_EPD_OK;
+}
+
+des_epd_ret_t des_epd_init(des_epd_t *epd) {
+    DES_EPD_ERROR_CHECK(_des_epd_init_seq(epd));
+
+    return DES_EPD_OK;
+}
\ No newline at end of file
diff --git a/lib/gdew0213m21/gdew0213m21_epd.h b/lib/gdew0213m21/gdew0213m21_epd.h
new file mode 100644
index 0000000..74483b8
--- /dev/null
+++ b/lib/gdew0213m21/gdew0213m21_epd.h
@@ -0,0 +1,28 @@
+#ifndef __GDEW0213M21_EPD_H
+#define __GDEW0213M21_EPD_H
+#include <stdint.h>
+
+#define DES_EPD_PANEL_SELECTION gdew0213m21_init_sequence
+
+typedef enum {
+    DES_EPD_OK,
+    DES_EPD_ERROR
+} des_epd_ret_t;
+
+typedef struct {
+    des_epd_ret_t (*write_cmd_cb)(void *handle, uint8_t *cmd, uint8_t len);
+    des_epd_ret_t (*write_data_cb)(void *handle, uint8_t *data, uint16_t len);
+    des_epd_ret_t (*reset_cb)(void *handle);
+    des_epd_ret_t (*check_busy_cb)(void *handle);
+} des_epd_cb_t;
+
+typedef struct {
+    void *user_data;
+    des_epd_cb_t cb;
+} des_epd_t;
+
+#define DES_EPD_ERROR_CHECK(x) if(x != DES_EPD_OK) return DES_EPD_ERROR
+
+des_epd_ret_t des_epd_init(des_epd_t *epd);
+
+#endif
\ No newline at end of file
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..2798ba6
--- /dev/null
+++ b/main.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+#include "gdew0213m21_epd.h"
+
+int main() {
+    printf("Hello World!\n");
+    return 0;
+}
\ No newline at end of file