fix set_memory

Author: zhcong

README.MD

@@ -1,6 +1,8 @@
 # ST7302-for-arduino
 - micropython version see [https://github.com/zhcong/ST7302-for-micropython](https://github.com/zhcong/ST7302-for-micropython)   
 - datasheet pdf file see [this link](doc/ST7302_V0.0.pdf)
+## screen
+![direction](doc/screen.jpg)
 ## screen direction
 ![direction](doc/screen-arrow.png)
 

doc/screen.jpg

@@ -139,14 +139,14 @@ void ST7302SPI::set_memory(int x_start_byte, int y, int width, int height, uint8
   int width_byte_size = int(_width / BYTE_BIT_SIZE);
   int part_width_byte_size = int(width / BYTE_BIT_SIZE);
   int byte_start = y * width_byte_size + x_start_byte;
-  for (int i = 0; i != part_width_byte_size; i++) {
-    for (int j = 0; j != height; j++) {
-      if (len_i == len) {
-        return;
+  for (int i = 0; i != height; i++) {
+    for (int j = 0; j != part_width_byte_size; j++) {
+        if (len_i == len) {
+          return;
+        }
+        _buffer[byte_start + i * width_byte_size + j] = data[len_i];
+        len_i++;
       }
-      _buffer[byte_start + j * width_byte_size + i] = data[len_i];
-      len_i++;
-    }
   }
 }
 

libraries/ST7302SPI/ST7302SPI.cpp

@@ -1,4 +1,3 @@
-#include <Print.h>
 #include <SPI.h>
 #include <Arduino.h>
 
@@ -21,7 +20,7 @@ class ST7302SPI
     void send_command(uint8_t command);
     void send_param(uint8_t param);
     // x_start_byte is byte array start position, not x pixel
-    void set_memory(int x_start_byte, int y, int width, int height, uint8_t * data, int len) ;
+    void set_memory(int x_start_byte, int y, int width, int height, uint8_t * data, int len);
     void text(int x_start_byte, int y, char words[], int len);
 
   private:

libraries/ST7302SPI/ST7302SPI.h

@@ -7,6 +7,8 @@
 #define _PIN_MOSI_ 3
 #define _PIN_MISO_ -1
 
+uint8_t font[]={0x06, 0x00, 0x00, 0x18, 0x07, 0x80, 0x00, 0x3c, 0x03, 0x87, 0xff, 0xfe, 0x03, 0xc0, 0x00, 0x00, 0x03, 0x80, 0x00, 0x00, 0x00, 0x21, 0x80, 0x70, 0x00, 0x71, 0xff, 0xf8, 0x7f, 0xf9, 0xc0, 0x78, 0x00, 0xf9, 0xc0, 0x70, 0x00, 0xf1, 0xc0, 0x70, 0x01, 0xe1, 0xc0, 0x70, 0x01, 0xe1, 0xc0, 0x70, 0x03, 0xc1, 0xff, 0xf0, 0x03, 0x81, 0xc0, 0x70, 0x07, 0xc0, 0x00, 0x10, 0x0f, 0xe6, 0x00, 0x38, 0x0f, 0xf7, 0xff, 0xfe, 0x1f, 0xbf, 0x0e, 0x3c, 0x37, 0xbf, 0x0e, 0x3c, 0x47, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0xff, 0xfc, 0x07, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0x0e, 0x3c, 0x07, 0x87, 0xff, 0xfc, 0x07, 0x87, 0x00, 0x3c, 0x07, 0x07, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
 ST7302SPI st7302spi(_PIN_SCK_, _PIN_MISO_, _PIN_MOSI_, _PIN_RST_, _PIN_DC_, _PIN_CS_, 250, 122);
 
 void setup() {
@@ -18,6 +20,9 @@ void setup() {
   // draw ascii
   char str1[] = "hello word1.";
   st7302spi. text(1, 20, str1, strlen(str1));
+
+  st7302spi.set_memory(0, 40, 32, 32, font, 128);
+
   st7302spi.flush_buffer();
 }
 

libraries/ST7302SPI/examples/ST7302Hello/ST7302Hello.ino

@@ -6,4 +6,4 @@ sentence=LCD screen ST7302 for arduino.
 paragraph=This driver can draw ascii characters, draw points and write directly to memory, for ST7302 screen driver.
 category=Display
 url=https://github.com/zhcong/ST7302-for-arduino
-architectures=* includes=ST7302SPI.h
+architectures=*