extract oled to separate file
This commit is contained in:
+1
-1
@@ -6,7 +6,7 @@ set(CMAKE_CXX_STANDARD 17)
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pico_sdk_init()
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add_executable(test
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main.c
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main.c oled.c
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ufb/framebuffer.c ufb/utf8.c ufb/font.c ufb/fb_7seg.c ufb/fb_text.c
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)
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@@ -7,191 +7,23 @@
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#include "framebuffer.h"
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#include "fb_text.h"
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const uint LED_PIN = 25;
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const uint DC_PIN = 20;
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const uint RST_PIN = 21;
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#include "oled.h"
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#define SSD1309_HEIGHT 64
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const uint LED_PIN = 25;
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/* Picotool info */
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// Make the SPI pins available to picotool
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bi_decl(bi_2pins_with_func(PICO_DEFAULT_SPI_TX_PIN, PICO_DEFAULT_SPI_SCK_PIN, GPIO_FUNC_SPI))
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bi_decl(bi_1pin_with_name(PICO_DEFAULT_SPI_CSN_PIN, "SPI CS"))
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bi_decl(bi_1pin_with_name(DC_PIN, "OLED DC"))
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bi_decl(bi_1pin_with_name(RST_PIN, "OLED RST"))
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bi_decl(bi_program_description("OLED demo"))
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bi_decl(bi_1pin_with_name(LED_PIN, "Blink LED"))
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static inline void cs_select() {
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asm volatile("nop \n nop \n nop");
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gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 0); // Active low
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asm volatile("nop \n nop \n nop");
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}
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static inline void cs_deselect() {
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asm volatile("nop \n nop \n nop");
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gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 1);
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asm volatile("nop \n nop \n nop");
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}
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static inline void dc_command() {
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gpio_put(DC_PIN, 0);
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}
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static inline void dc_data() {
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gpio_put(DC_PIN, 1);
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}
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static void oled_command16(uint8_t cmd, uint8_t arg) {
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uint8_t buf[2];
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buf[0] = cmd;
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buf[1] = arg;
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dc_command();
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cs_select();
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spi_write_blocking(spi_default, buf, 2);
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cs_deselect();
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}
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static void oled_command(uint8_t cmd) {
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dc_command();
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cs_select();
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spi_write_blocking(spi_default, &cmd, 1);
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cs_deselect();
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}
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static void oled_reset() {
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// Issue a display reset
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gpio_put(RST_PIN, 0);
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sleep_ms(1);
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gpio_put(RST_PIN, 1);
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sleep_ms(1);
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}
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int main() {
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bi_decl(bi_program_description("This is a test binary."));
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bi_decl(bi_1pin_with_name(LED_PIN, "On-board LED"));
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stdio_init_all();
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gpio_init(LED_PIN);
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gpio_set_dir(LED_PIN, GPIO_OUT);
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// This example will use SPI0 at 10MHz.
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spi_init(spi_default, 10 * 1000 * 1000);
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gpio_set_function(PICO_DEFAULT_SPI_SCK_PIN, GPIO_FUNC_SPI);
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gpio_set_function(PICO_DEFAULT_SPI_TX_PIN, GPIO_FUNC_SPI);
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// Chip select is active-low, so we'll initialise it to a driven-high state
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gpio_init(PICO_DEFAULT_SPI_CSN_PIN);
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gpio_set_dir(PICO_DEFAULT_SPI_CSN_PIN, GPIO_OUT);
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gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 1);
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gpio_init(DC_PIN);
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gpio_set_dir(DC_PIN, GPIO_OUT);
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gpio_init(RST_PIN);
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gpio_set_dir(RST_PIN, GPIO_OUT);
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oled_reset();
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// simplified display init
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oled_command(0xAE); /* Display off */
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//oled_command16(0xD5, 0xF0); // set clock speed
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oled_command16(0x20, 0b00); // page addressing mode: 00 - horizontal, 01 vertical, 10 page
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oled_command16(0x81, 0xFF);
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//oled_command16(0xD9, 0xff);
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oled_command(0xAF); /*--turn on SSD1309 panel */
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#if 0
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/* Init OLED */
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oled_command(0xAE); /* Display off */
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// Configure the display - only setting things that differ from the default:
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oled_command16(0x20, 0b10); /* Set Memory Addressing Mode */
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/* 00,Horizontal Addressing Mode; 01,Vertical Addressing Mode; */
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/* 10,Page Addressing Mode (RESET); 11,Invalid */
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oled_command(0xB0); /*Set Page Start Address for Page Addressing Mode, B0-B7 */
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#ifdef SSD1309_MIRROR_VERT
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oled_command(0xC1);
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#else
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oled_command(0xC0);
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#endif
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// lower nibble is value
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oled_command(0x00); /*---set low column address 00~0F */
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oled_command(0x10); /*---set high column address 10~1F */
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oled_command(0x40); /*--set start line address - 40~7F */
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oled_command16(0x81, 0x7F); /*--set contrast control register - ? 0xFF */
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#ifdef SSD1309_MIRROR_HORIZ
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oled_command(0xA1);
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#else
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oled_command(0xA0);
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#endif
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#ifdef SSD1309_INVERSE_COLOR
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oled_command(0xA7); /*--set inverse color */
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#else
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oled_command(0xA6); /*--set normal color */
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#endif
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/*--set multiplex ratio(1 to 64) */
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#if (SSD1309_HEIGHT == 32)
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oled_command16(0xA8, 0x1F);
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#elif (SSD1309_HEIGHT == 64)
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oled_command16(0xA8, 0x3F);
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#else
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#error "bad height"
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#endif
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oled_command(0xA4); /* 0xA4, Output follows RAM content;0xa5,Output ignores RAM content */
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oled_command16(0xD3, 0x00); /*-set display offset */
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oled_command16(0xD5, 0xF0); /*--set display clock divide ratio/oscillator frequency */
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oled_command16(0xD9, 0x22); /*--set pre-charge period */
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/*--set com pins hardware configuration */
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#if (SSD1309_HEIGHT == 32)
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oled_command16(0xDA, 0x02);
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#elif (SSD1309_HEIGHT == 64)
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oled_command16(0xDA, 0x12);
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#else
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#error "bad height"
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#endif
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oled_command16(0xDB, 0x34); /*--set vcomh */
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// ??? not listed in the datasheet
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// oled_command(0x8D); /*--set DC-DC enable */
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// oled_command(0x14); /* */
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oled_command(0xAF); /*--turn on SSD1309 panel */
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oled_command(0xA5); // entire display on - for test
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#endif
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oled_init();
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#define ZIR_W 12
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#define ZIR_H 24
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@@ -239,27 +71,18 @@ int main() {
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fb_clear();
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fb_bitmap(5, 5, ZIR_W, ZIR_H, zirafa, 1);
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fb_text(40, 23, "MEOW", FONT_DOUBLE, 1);
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fb_text(50, 35, "meow", FONT_DOUBLE, 1);
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fb_text(40, 35, "MEOW", FONT_DOUBLE, 1);
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fb_text(50, 20, "meow", FONT_DOUBLE, 1);
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fb_frame(0, 0, 128, 64, 2, 1);
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fb_blit();
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// dc_data();
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// cs_select();
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// uint8_t pattern = 0;
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// for (uint i = 0; i < 128 * 8; i++) {
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// pattern = i & 0xFF;
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// spi_write_blocking(spi_default, &pattern, 1);
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// }
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// cs_deselect();
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while (1) {
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oled_command(0xA6); // invert
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oled_invert(true);
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gpio_put(LED_PIN, 0);
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sleep_ms(1000);
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oled_command(0xA7); // uninvert
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oled_invert(false);
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gpio_put(LED_PIN, 1);
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@@ -267,10 +90,3 @@ int main() {
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sleep_ms(1000);
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}
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}
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void fb_blit() {
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dc_data();
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cs_select();
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spi_write_blocking(spi_default, fb, FB_LEN);
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cs_deselect();
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}
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@@ -0,0 +1,199 @@
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//
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// Created by MightyPork on 2022/12/28.
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//
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "hardware/gpio.h"
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#include "pico/binary_info.h"
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#include "hardware/spi.h"
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#include "framebuffer.h"
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static const uint DC_PIN = 20;
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static const uint RST_PIN = 21;
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#define SSD1309_HEIGHT 64
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/* Picotool info */
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// Make the SPI pins available to picotool
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bi_decl(bi_2pins_with_func(PICO_DEFAULT_SPI_TX_PIN, PICO_DEFAULT_SPI_SCK_PIN, GPIO_FUNC_SPI))
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bi_decl(bi_1pin_with_name(PICO_DEFAULT_SPI_CSN_PIN, "SPI CS"))
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bi_decl(bi_1pin_with_name(DC_PIN, "OLED DC"))
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bi_decl(bi_1pin_with_name(RST_PIN, "OLED RST"))
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static inline void cs_select() {
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asm volatile("nop \n nop \n nop");
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gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 0); // Active low
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asm volatile("nop \n nop \n nop");
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}
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static inline void cs_deselect() {
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asm volatile("nop \n nop \n nop");
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gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 1);
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asm volatile("nop \n nop \n nop");
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}
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static inline void dc_command() {
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gpio_put(DC_PIN, 0);
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}
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static inline void dc_data() {
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gpio_put(DC_PIN, 1);
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}
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void oled_command16(uint8_t cmd, uint8_t arg) {
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uint8_t buf[2];
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buf[0] = cmd;
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buf[1] = arg;
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dc_command();
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cs_select();
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spi_write_blocking(spi_default, buf, 2);
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cs_deselect();
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}
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void oled_command(uint8_t cmd) {
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dc_command();
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cs_select();
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spi_write_blocking(spi_default, &cmd, 1);
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cs_deselect();
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}
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void oled_reset() {
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// Issue a display reset
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gpio_put(RST_PIN, 0);
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sleep_ms(1);
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gpio_put(RST_PIN, 1);
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sleep_ms(1);
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}
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void oled_invert(bool invert) {
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if (invert) {
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oled_command(0xA6);
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} else {
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oled_command(0xA7);
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}
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}
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void oled_init() {
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// This example will use SPI0 at 10MHz.
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spi_init(spi_default, 10 * 1000 * 1000);
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gpio_set_function(PICO_DEFAULT_SPI_SCK_PIN, GPIO_FUNC_SPI);
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gpio_set_function(PICO_DEFAULT_SPI_TX_PIN, GPIO_FUNC_SPI);
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// Chip select is active-low, so we'll initialise it to a driven-high state
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gpio_init(PICO_DEFAULT_SPI_CSN_PIN);
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gpio_set_dir(PICO_DEFAULT_SPI_CSN_PIN, GPIO_OUT);
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gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 1);
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gpio_init(DC_PIN);
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gpio_set_dir(DC_PIN, GPIO_OUT);
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gpio_init(RST_PIN);
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gpio_set_dir(RST_PIN, GPIO_OUT);
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oled_reset();
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// simplified display init
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oled_command(0xAE); /* Display off */
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//oled_command16(0xD5, 0xF0); // set clock speed
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oled_command16(0x20, 0b00); // page addressing mode: 00 - horizontal, 01 vertical, 10 page
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oled_command16(0x81, 0xFF); // contrast
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oled_command(0xAF); /*--turn on SSD1309 panel */
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#if 0
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/* Init OLED */
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oled_command(0xAE); /* Display off */
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// Configure the display - only setting things that differ from the default:
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oled_command16(0x20, 0b10); /* Set Memory Addressing Mode */
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/* 00,Horizontal Addressing Mode; 01,Vertical Addressing Mode; */
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/* 10,Page Addressing Mode (RESET); 11,Invalid */
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oled_command(0xB0); /*Set Page Start Address for Page Addressing Mode, B0-B7 */
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#ifdef SSD1309_MIRROR_VERT
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oled_command(0xC1);
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#else
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oled_command(0xC0);
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#endif
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// lower nibble is value
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oled_command(0x00); /*---set low column address 00~0F */
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oled_command(0x10); /*---set high column address 10~1F */
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oled_command(0x40); /*--set start line address - 40~7F */
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oled_command16(0x81, 0x7F); /*--set contrast control register - ? 0xFF */
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#ifdef SSD1309_MIRROR_HORIZ
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oled_command(0xA1);
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#else
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oled_command(0xA0);
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#endif
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#ifdef SSD1309_INVERSE_COLOR
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oled_command(0xA7); /*--set inverse color */
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#else
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oled_command(0xA6); /*--set normal color */
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#endif
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/*--set multiplex ratio(1 to 64) */
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#if (SSD1309_HEIGHT == 32)
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oled_command16(0xA8, 0x1F);
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#elif (SSD1309_HEIGHT == 64)
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oled_command16(0xA8, 0x3F);
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#else
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#error "bad height"
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#endif
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oled_command(0xA4); /* 0xA4, Output follows RAM content;0xa5,Output ignores RAM content */
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oled_command16(0xD3, 0x00); /*-set display offset */
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oled_command16(0xD5, 0xF0); /*--set display clock divide ratio/oscillator frequency */
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oled_command16(0xD9, 0x22); /*--set pre-charge period */
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/*--set com pins hardware configuration */
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#if (SSD1309_HEIGHT == 32)
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oled_command16(0xDA, 0x02);
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#elif (SSD1309_HEIGHT == 64)
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oled_command16(0xDA, 0x12);
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#else
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#error "bad height"
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#endif
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oled_command16(0xDB, 0x34); /*--set vcomh */
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// ??? not listed in the datasheet
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// oled_command(0x8D); /*--set DC-DC enable */
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// oled_command(0x14); /* */
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oled_command(0xAF); /*--turn on SSD1309 panel */
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oled_command(0xA5); // entire display on - for test
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#endif
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}
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void oled_data(uint8_t *data, size_t len) {
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dc_data();
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cs_select();
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spi_write_blocking(spi_default, data, len);
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cs_deselect();
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}
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void fb_blit() {
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oled_data(fb, FB_LEN);
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}
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@@ -0,0 +1,19 @@
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//
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// Created by MightyPork on 2022/12/28.
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//
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#ifndef TEST_PROJECT_OLED_H
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#define TEST_PROJECT_OLED_H
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#include <stdint.h>
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#include <stddef.h>
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void oled_init();
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void oled_reset();
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void oled_command(uint8_t cmd);
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void oled_command16(uint8_t cmd, uint8_t arg);
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void oled_invert(bool invert);
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void oled_data(uint8_t *data, size_t len);
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#endif //TEST_PROJECT_OLED_H
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