gpongnot/LPC804_e-paper
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Compilation sans erreur, test réel à faire

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This commit is contained in:
Gaël Pongnot
2022-09-12 13:09:36 +02:00
parent a2e7686c75
commit 4d44be9efa
3 changed files with 50 additions and 51 deletions
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11
inc/lib_epaper_2in9.h
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@@ -2,6 +2,9 @@
#define LIB_EPAPER_2IN9_H_ #define LIB_EPAPER_2IN9_H_
#include "LPC8xx.h" #include "LPC8xx.h"
#include "swm.h"
#include "spi.h"
#include "syscon.h"
// Pin definition - à modifier // Pin definition - à modifier
#define SPIBAUD 115200 #define SPIBAUD 115200
@@ -47,17 +50,17 @@
void _epaper_spiinit(); void _epaper_spiinit();
void _epaper_spitransfer(uint8_t data); void _epaper_spitransfer(uint8_t data);
uint8_t _epaper_digitalread(uint8_t pin); uint8_t _epaper_digitalread(uint8_t pin);
uint8_t _epaper_digitalwrite(uint8_t pin, uint8_t value); void _epaper_digitalwrite(uint8_t pin, uint8_t value);
void _epaper_setlut(const uint8_t* lut); void _epaper_setlut(const uint8_t* lut);
void _epaper_setmemoryarea(uint8_t x_start, uint8_t y_start, uint8_t x_stop, uint8_t y_stop); void _epaper_setmemoryarea(uint16_t x_start, uint16_t y_start, uint16_t x_stop, uint16_t y_stop);
void _epaper_setmemorypointer(uint8_t x, uint8_t y); void _epaper_setmemorypointer(uint16_t x, uint16_t y);
// User functions // User functions
uint8_t epaper_init(); uint8_t epaper_init();
void epaper_sendcommand(uint8_t command); void epaper_sendcommand(uint8_t command);
void epaper_senddata(uint8_t data); void epaper_senddata(uint8_t data);
void epaper_reset(); void epaper_reset();
void epaper_setframe(uint8_t* image_buffer, uint8_t x, uint8_t y, uint8_t w, uint8_t h); void epaper_setframe(uint8_t* image_buffer, uint16_t x, uint16_t y, uint16_t w, uint16_t h);
void epaper_clearframe(uint8_t color); void epaper_clearframe(uint8_t color);
void epaper_display(); void epaper_display();
void epaper_sleep(); void epaper_sleep();

79
src/lib_epaper_2in9.c
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@@ -1,5 +1,23 @@
#include "lib_epaper_2in9.h" #include "lib_epaper_2in9.h"
// Constants
const uint8_t lut_full_update[] = {
0x50, 0xAA, 0x55, 0xAA, 0x11, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFF, 0xFF, 0x1F, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const uint8_t lut_partial_update[] = {
0x10, 0x18, 0x18, 0x08, 0x18, 0x18,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
// Basic functions // Basic functions
void _epaper_spiinit() void _epaper_spiinit()
{ {
@@ -48,7 +66,7 @@ uint8_t _epaper_digitalread(uint8_t pin)
return LPC_GPIO_PORT->B0[pin]; return LPC_GPIO_PORT->B0[pin];
} }
uint8_t _epaper_digitalwrite(uint8_t pin, uint8_t value) void _epaper_digitalwrite(uint8_t pin, uint8_t value)
{ {
LPC_GPIO_PORT->B0[pin] = value; LPC_GPIO_PORT->B0[pin] = value;
} }
@@ -58,24 +76,24 @@ void _epaper_setlut(const uint8_t* lut)
epaper_sendcommand(WRITE_LUT_REGISTER); epaper_sendcommand(WRITE_LUT_REGISTER);
/* the length of look-up table is 30 bytes */ /* the length of look-up table is 30 bytes */
for (int i = 0; i < 30; i++) { for (int i = 0; i < 30; i++) {
SendData(lut[i]); epaper_senddata(lut[i]);
} }
} }
void _epaper_setmemoryarea(uint8_t x_start, uint8_t y_start, uint8_t x_stop, uint8_t y_stop) void _epaper_setmemoryarea(uint16_t x_start, uint16_t y_start, uint16_t x_stop, uint16_t y_stop)
{ {
epaper_sendcommand(SET_RAM_X_ADDRESS_START_END_POSITION); epaper_sendcommand(SET_RAM_X_ADDRESS_START_END_POSITION);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */ /* x point must be the multiple of 8 or the last 3 bits will be ignored */
epaper_senddata((x_start >> 3) & 0xFF); epaper_senddata((x_start >> 3) & 0xFF);
epaper_senddata((x_end >> 3) & 0xFF); epaper_senddata((x_stop >> 3) & 0xFF);
epaper_sendcommand(SET_RAM_Y_ADDRESS_START_END_POSITION); epaper_sendcommand(SET_RAM_Y_ADDRESS_START_END_POSITION);
epaper_senddata(y_start & 0xFF); epaper_senddata(y_start & 0xFF);
epaper_senddata((y_start >> 8) & 0xFF); epaper_senddata((y_start >> 8) & 0xFF);
epaper_senddata(y_end & 0xFF); epaper_senddata(y_stop & 0xFF);
epaper_senddata((y_end >> 8) & 0xFF); epaper_senddata((y_stop >> 8) & 0xFF);
} }
void _epaper_setmemorypointer(uint8_t x, uint8_t y) void _epaper_setmemorypointer(uint16_t x, uint16_t y)
{ {
epaper_sendcommand(SET_RAM_X_ADDRESS_COUNTER); epaper_sendcommand(SET_RAM_X_ADDRESS_COUNTER);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */ /* x point must be the multiple of 8 or the last 3 bits will be ignored */
@@ -129,7 +147,7 @@ void epaper_sendcommand(uint8_t command)
void epaper_senddata(uint8_t data) void epaper_senddata(uint8_t data)
{ {
_epaper_digitalwrite(DC_PIN, 1); _epaper_digitalwrite(DC_PIN, 1);
_epaper_spitransfer(command); _epaper_spitransfer(data);
} }
void epaper_reset() void epaper_reset()
@@ -140,30 +158,25 @@ void epaper_reset()
for(uint32_t i = 0; i<10000; i++); for(uint32_t i = 0; i<10000; i++);
} }
void epaper_setframe(uint8_t* image_buffer, uint8_t x, uint8_t y, uint8_t w, uint8_t h) void epaper_setframe(uint8_t* image_buffer, uint16_t x, uint16_t y, uint16_t w, uint16_t h)
{ {
int x_end; int x_end;
int y_end; int y_end;
if ( if (image_buffer == 0 || x < 0 || w < 0 || y < 0 || h < 0) return;
image_buffer == NULL ||
x < 0 || image_width < 0 ||
y < 0 || image_height < 0
) {
return;
}
/* x point must be the multiple of 8 or the last 3 bits will be ignored */ /* x point must be the multiple of 8 or the last 3 bits will be ignored */
x &= 0xF8; x &= 0xF8;
image_width &= 0xF8; w &= 0xF8;
if (x + image_width >= this->width) { if (x + w >= EPD_WIDTH) {
x_end = this->width - 1; x_end = EPD_WIDTH - 1;
} else { } else {
x_end = x + image_width - 1; x_end = x + EPD_WIDTH - 1;
} }
if (y + image_height >= this->height) { if (y + h >= EPD_HEIGHT) {
y_end = this->height - 1; y_end = EPD_HEIGHT - 1;
} else { } else {
y_end = y + image_height - 1; y_end = y + EPD_HEIGHT - 1;
} }
_epaper_setmemoryarea(x, y, x_end, y_end); _epaper_setmemoryarea(x, y, x_end, y_end);
_epaper_setmemorypointer(x, y); _epaper_setmemorypointer(x, y);
@@ -171,7 +184,7 @@ void epaper_setframe(uint8_t* image_buffer, uint8_t x, uint8_t y, uint8_t w, uin
/* send the image data */ /* send the image data */
for (int j = 0; j < y_end - y + 1; j++) { for (int j = 0; j < y_end - y + 1; j++) {
for (int i = 0; i < (x_end - x + 1) / 8; i++) { for (int i = 0; i < (x_end - x + 1) / 8; i++) {
SendData(image_buffer[i + j * (image_width / 8)]); epaper_senddata(image_buffer[i + j * (w / 8)]);
} }
} }
} }
@@ -182,7 +195,7 @@ void epaper_clearframe(uint8_t color)
_epaper_setmemorypointer(0, 0); _epaper_setmemorypointer(0, 0);
epaper_sendcommand(WRITE_RAM); epaper_sendcommand(WRITE_RAM);
/* send the color data */ /* send the color data */
for (int i = 0; i < this->width / 8 * this->height; i++) { for (int i = 0; i < EPD_WIDTH / 8 * EPD_HEIGHT; i++) {
epaper_senddata(color); epaper_senddata(color);
} }
} }
@@ -202,19 +215,3 @@ void epaper_sleep()
epaper_sendcommand(DEEP_SLEEP_MODE); epaper_sendcommand(DEEP_SLEEP_MODE);
epaper_senddata(0x01); epaper_senddata(0x01);
} }
const uint8_t lut_full_update[] = {
0x50, 0xAA, 0x55, 0xAA, 0x11, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFF, 0xFF, 0x1F, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const uint8_t lut_partial_update[] = {
0x10, 0x18, 0x18, 0x08, 0x18, 0x18,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

11
src/main.c
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@@ -8,10 +8,6 @@
#include "lib_ENS_II1_lcd.h" #include "lib_ENS_II1_lcd.h"
#include "lib_epaper_2in9.h" #include "lib_epaper_2in9.h"
#define SCK_PIN P0_19
// //
// Main routine // Main routine
// //
@@ -24,10 +20,13 @@ int main(void) {
init_lcd(); init_lcd();
lcd_puts("Test e-paper"); lcd_puts("Test e-paper");
lcd_position(1, 0); lcd_position(1, 0);
lcd_puts("Init ok"); lcd_puts("Initialisation ok");
while(1) { while(1) {
for(int i = 100000; i>0; i--);
epaper_clearframe(0xFF);
for(int i = 100000; i>0; i--);
epaper_clearframe(0x88);
}; };
} // end of main } // end of main