adolforeyna/eink-api
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show commands as typed on screen

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This commit is contained in:
aeroreyna
2026-01-04 19:15:09 -05:00
parent b7e3dde91a
commit 3681a7f81d
2 changed files with 66 additions and 23 deletions
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2
CMakeLists.txt
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@@ -60,7 +60,7 @@ target_include_directories(eink_api PRIVATE
# Add the standard library to the build
target_link_libraries(eink_api
pico_stdlib ePaper GUI Fonts hardware_spi)
pico_stdlib ePaper GUI Fonts hardware_spi pico_multicore)
# Add the standard include files to the build
target_include_directories(eink_api PRIVATE

81
eink_api.c
View File

@@ -2,6 +2,8 @@
#include <stdlib.h>
#include <string.h>
#include "pico/stdlib.h"
#include "pico/multicore.h"
#include "pico/util/queue.h"
// e-Paper library includes
#include "DEV_Config.h"
@@ -12,7 +14,10 @@
//Create a new image cache
UBYTE *BlackImage;
queue_t q;
void process_command(char *cmd);
void core1_entry();
int epaper_init()
{
@@ -34,7 +39,6 @@ int epaper_init()
}
printf("Paint_NewImage\r\n");
Paint_NewImage(BlackImage, EPD_4IN2_V2_WIDTH, EPD_4IN2_V2_HEIGHT, 0, WHITE);
EPD_4IN2_V2_PartialDisplay(BlackImage, 0, 0, EPD_4IN2_V2_WIDTH, EPD_4IN2_V2_HEIGHT);
return 1;
}
@@ -44,8 +48,8 @@ int epaper_init()
int epaper_close()
{
DEV_Delay_ms(1000);
// EPD_4IN2_V2_Init();
// EPD_4IN2_V2_Clear();
EPD_4IN2_V2_Init();
EPD_4IN2_V2_Clear();
printf("Goto Sleep...\r\n");
EPD_4IN2_V2_Sleep();
free(BlackImage);
@@ -64,7 +68,7 @@ void process_command(char *cmd)
Paint_Clear(WHITE);
printf("e-Paper cleared\n");
} else if (strcmp(cmd, "display") == 0) {
EPD_4IN2_V2_PartialDisplay(BlackImage, 0, 0, EPD_4IN2_V2_WIDTH, EPD_4IN2_V2_HEIGHT);
EPD_4IN2_V2_Display(BlackImage);
printf("Display updated\n");
} else if (strcmp(cmd, "draw_test") == 0) {
Paint_Clear(WHITE);
@@ -78,7 +82,7 @@ void process_command(char *cmd)
int x, y;
char text[200];
if (sscanf(cmd, "draw_text %d %d %199[^\n]", &x, &y, text) == 3) {
Paint_DrawString_EN(x, y, text, &Font16, WHITE, BLACK);
Paint_DrawString_EN(x, y, text, &Font24, BLACK, WHITE);
printf("Drew text at %d, %d: %s\n", x, y, text);
} else {
printf("Invalid draw_text command format. Use: draw_text x y text\n");
@@ -139,39 +143,78 @@ void process_command(char *cmd)
}
}
void core1_entry() {
epaper_init();
EPD_4IN2_V2_Display(BlackImage);
char cmd_buffer[256];
int i = 0;
while (true) {
bool newChar = false;
while (!queue_is_empty(&q)) {
int c;
queue_remove_blocking(&q, &c);
newChar = true;
if (c == '\n' || c == '\r') {
cmd_buffer[i] = '\0';
process_command(cmd_buffer);
i = 0;
// Clear the command buffer display area
Paint_ClearWindows(1, 281, 399, 299, WHITE);
break;
} else if (c == '\b' || c == 127) { // Handle backspace
if (i > 0) {
i--;
}
} else {
if (i < (sizeof(cmd_buffer) - 1)) {
cmd_buffer[i++] = c;
}
}
}
if(newChar){
cmd_buffer[i] = '\0';
//char text[200];
//sscanf(cmd_buffer, "199[^\n]", text);
// Update the command buffer display
Paint_ClearWindows(2, 271, 399, 299, WHITE);
Paint_DrawRectangle(1, 270, 400, 300, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
// printf("Current: %s, buff:%s\n", text, cmd_buffer);
Paint_DrawString_EN(10, 275, cmd_buffer, &Font24, WHITE, BLACK);
EPD_4IN2_V2_PartialDisplay(BlackImage, 0, 0, 400, 300);
}
}
}
int main()
{
stdio_init_all();
epaper_init();
printf("e-ink api ready\n");
char cmd_buffer[256];
int i = 0;
queue_init(&q, sizeof(int), 256);
multicore_launch_core1(core1_entry);
while (true) {
int c = getchar_timeout_us(0);
if (c != PICO_ERROR_TIMEOUT) {
queue_add_blocking(&q, &c);
if (c == '\n' || c == '\r') {
printf("\n");
cmd_buffer[i] = '\0';
process_command(cmd_buffer);
i = 0;
} else if (c == '\b' || c == 127) { // Handle backspace
if (i > 0) {
i--;
} else if (c == '\b' || c == 127) {
printf("\b \b");
}
} else {
if (i < (sizeof(cmd_buffer) - 1)) {
cmd_buffer[i++] = c;
printf("%c", c);
}
}
}
}
epaper_close();
return 0;