JapanDisplayInc
Check refresh speed by transfermode 4bit,3bit,1bit with MIP8F_SPI_Ver50
Dependencies: MIP8F_SPI_Ver50 MIP8f_FRDM_LineBuffer_sample mbed
Dependents: MIP8f_FRDM_Animation_sample
Introduction
this sample is checking the refresh display speed between 4bit,3bit and 1bit transfer mode.
- spi-transfer to Display has 3 mode. 4bit mode is color display, this bit arrange is R,G,B,x. R,G,B = R,G,B subpixel bit. x bit is Dummy. 3bit mode is color display, this bit arrange is R,G,B. R,G,B = R,G,B subpixel bit. No bit is Dummy. 1bit mode is monocrome display,high speed refresh mode. a only Green subpixel of bitmap data is transfered.
Other information , please refer to https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/
Usage
Copy Setting File and Image to micro SD-CARD. you can NOT use same sample color images of OTHER VERSION SAMPLE.
a) Download the following file corresponding to the target panel, and rename file identifier (.bin -> .zip), and unzip the file on micro SD Card's root directory.
LPM027M128x (400x240) :/media/uploads/JDI_Mbed_Team/400x240_ver30.bin
b) Insert micro SD-CARD to FRDM-K64F. c) Upload binary file to FRDM-K64F.and push Reset Button.
Other information
refer to Usage on https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/
this Sample Code (.bin)
/media/uploads/JDI_Mbed_Team/mip8f_frdm_transfermode_sample.k64f.bin
Diff: SDFileSystem/FATFileSystem/MemFileSystem.h
- Revision:
- 0:33fe30a2b785
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem/FATFileSystem/MemFileSystem.h Tue Sep 04 06:44:01 2018 +0000
@@ -0,0 +1,77 @@
+/* mbed Microcontroller Library - MemFileSystem
+ * Copyright (c) 2008, sford
+ */
+
+
+#ifndef MBED_MEMFILESYSTEM_H
+#define MBED_MEMFILESYSTEM_H
+
+#include "FATFileSystem.h"
+
+namespace mbed
+{
+
+ class MemFileSystem : public FATFileSystem
+ {
+ public:
+
+ // 2000 sectors, each 512 bytes (malloced as required)
+ char *sectors[2000];
+
+ MemFileSystem(const char* name) : FATFileSystem(name) {
+ memset(sectors, 0, sizeof(sectors));
+ }
+
+ virtual ~MemFileSystem() {
+ for(int i = 0; i < 2000; i++) {
+ if(sectors[i]) {
+ free(sectors[i]);
+ }
+ }
+ }
+
+ // read a sector in to the buffer, return 0 if ok
+ virtual int disk_read(char *buffer, int sector) {
+ if(sectors[sector] == 0) {
+ // nothing allocated means sector is empty
+ memset(buffer, 0, 512);
+ } else {
+ memcpy(buffer, sectors[sector], 512);
+ }
+ return 0;
+ }
+
+ // write a sector from the buffer, return 0 if ok
+ virtual int disk_write(const char *buffer, int sector) {
+ // if buffer is zero deallocate sector
+ char zero[512];
+ memset(zero, 0, 512);
+ if(memcmp(zero, buffer, 512)==0) {
+ if(sectors[sector] != 0) {
+ free(sectors[sector]);
+ sectors[sector] = 0;
+ }
+ return 0;
+ }
+ // else allocate a sector if needed, and write
+ if(sectors[sector] == 0) {
+ char *sec = (char*)malloc(512);
+ if(sec==0) {
+ return 1; // out of memory
+ }
+ sectors[sector] = sec;
+ }
+ memcpy(sectors[sector], buffer, 512);
+ return 0;
+ }
+
+ // return the number of sectors
+ virtual int disk_sectors() {
+ return sizeof(sectors)/sizeof(sectors[0]);
+ }
+
+ };
+
+}
+
+#endif
\ No newline at end of file