move source to folder; openocd.sh programs directly

1 files changed, 356 insertions, 0 deletions

diff --git a/source/dogs.c b/source/dogs.c
new file mode 100644
index 0000000..b986845
--- /dev/null
+++ b/source/dogs.c
@@ -0,0 +1,356 @@
+/**
+ * dogs.c - Interface for drawing to the EADOGS102N-6 display.
+ * Copyright (C) 2020  Clyne Sullivan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * See the GNU General Public License for more details.
+ */
+
+//#include "ch.h"
+#include "dogs.h"
+#include "hal.h"
+
+#define SET_DATA palSetPad(GPIOC, 15)
+#define SET_CMD  palClearPad(GPIOC, 15)
+#define CS_HIGH  palSetPad(GPIOA, 4)
+#define CS_LOW   palClearPad(GPIOA, 4)
+unsigned char dogs_buffer[DISP_WIDTH * DISP_HEIGHT / 8];
+
+//static volatile bool dogs_spi_done = false;
+
+#define spi_send(data, len) spiSend(&SPID1, len, data)
+//static void spi_send(unsigned char *data, unsigned int len)
+//{
+    //dogs_spi_done = false;
+    //spiStartSend(&SPID1, len, data);
+    //while (!dogs_spi_done)
+    //    asm("wfi");
+
+    //for (; len > 0; --len)
+    //    spiPolledExchange(&SPID1, *data++);
+//}
+
+static void dogs_init_display();
+//static void dogs_spi_callback(SPIDriver *spid)
+//{
+//    if (spiIsBufferComplete(spid))
+//        dogs_spi_done = true;
+//}
+
+void dogs_init()
+{
+    // SPI
+    palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATE(1));     // MOSI
+    palSetPadMode(GPIOA, 5, PAL_MODE_ALTERNATE(0));     // CLK
+    palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL);  // nCS
+    palSetPadMode(GPIOC, 14, PAL_MODE_OUTPUT_PUSHPULL); // nRST
+    palSetPadMode(GPIOC, 15, PAL_MODE_OUTPUT_PUSHPULL); // CD
+
+    palSetPad(GPIOA, 4);
+    palSetPad(GPIOC, 14);
+    palClearPad(GPIOC, 15);
+
+    static const SPIConfig spicfg = {
+        false,
+        NULL /*dogs_spi_callback*/,
+        0, // cr1
+        0
+    };
+    spiStart(&SPID1, &spicfg);
+
+    dogs_init_display();
+    dogs_clear();
+    dogs_flush();
+}
+
+void dogs_write_cmd(unsigned char byte)
+{
+    spi_send(&byte, 1);
+}
+
+void dogs_set_column(unsigned int col)
+{
+    dogs_write_cmd(0x10 | ((col >> 4) & 0xF));
+    dogs_write_cmd(0x00 | (col & 0xF));
+}
+void dogs_set_power(unsigned int bits)
+{
+    dogs_write_cmd(0x28 | (bits & 0x7));
+}
+void dogs_set_scroll_line(unsigned int startline)
+{
+    dogs_write_cmd(0x40 | (startline & 0x3F));
+}
+void dogs_set_page(unsigned int page)
+{
+    dogs_write_cmd(0xB0 | (page & 0xF));
+}
+void dogs_set_vlcd_ratio(unsigned int ratio)
+{
+    dogs_write_cmd(0x20 | (ratio & 0x7));
+}
+void dogs_set_contrast(unsigned int value)
+{
+    dogs_write_cmd(0x81);
+    dogs_write_cmd(0x00 | (value & 0x3F));
+}
+void dogs_set_pixelson(bool on)
+{
+    dogs_write_cmd(on ? 0xA5 : 0xA4);
+}
+void dogs_set_invert(bool invert)
+{
+    dogs_write_cmd(invert ? 0xA7 : 0xA6);
+}
+void dogs_set_sleep(bool sleep)
+{
+    dogs_write_cmd(sleep ? 0xAE : 0xAF);
+}
+void dogs_set_segdir(bool normal)
+{
+    dogs_write_cmd(normal ? 0xA0 : 0xA1);
+}
+void dogs_set_comdir(bool normal)
+{
+    dogs_write_cmd(normal ? 0xC0 : 0xC8);
+}
+void dogs_reset()
+{
+    dogs_write_cmd(0xE2);
+}
+void dogs_set_bias(bool higher)
+{
+    dogs_write_cmd(higher ? 0xA2 : 0xA3);
+}
+void dogs_set_advanced(unsigned int bits)
+{
+    dogs_write_cmd(0xFA);
+    dogs_write_cmd(0x10 | bits);
+}
+
+void dogs_init_display()
+{
+    SET_CMD;
+    CS_LOW;
+    dogs_reset();
+    CS_HIGH;
+
+    unsigned long int reset_sleep = (STM32_SYSCLK / 1000) * 100;
+    while (reset_sleep != 0) {
+        asm("nop; nop; nop; nop; nop");
+        reset_sleep -= 8;
+    }
+
+    CS_LOW;
+    dogs_set_scroll_line(0);
+    dogs_set_segdir(true);
+    dogs_set_comdir(false);
+    dogs_set_pixelson(false);
+    dogs_set_invert(false);
+    dogs_set_bias(true);
+    dogs_set_power(0x07);
+    dogs_set_vlcd_ratio(7);
+    dogs_set_contrast(12);
+    dogs_set_advanced(0x83);
+    dogs_set_sleep(false);
+    CS_HIGH;
+}
+
+void dogs_clear()
+{
+    uint32_t *ptr = (uint32_t *)dogs_buffer;
+    unsigned int count = sizeof(dogs_buffer) / sizeof(uint32_t) / 12;
+
+    for (; count; --count) {
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+        *ptr++ = 0;
+    }
+}
+
+void dogs_flush()
+{
+    unsigned char *ptr = dogs_buffer;
+    CS_LOW;
+    for (int page = 0; page < 8; ++page) {
+        SET_CMD;
+        dogs_set_page(page);
+        dogs_set_column(30);
+
+        SET_DATA;
+        spi_send(ptr, 102);
+        ptr += 102;
+    }
+    CS_HIGH;
+}
+
+void draw_pixel(int x, int y, bool state)
+{
+    if (x < 0 || y < 0 || x >= DISP_WIDTH || y >= DISP_HEIGHT)
+        return;
+    y = DISP_HEIGHT - 1 - y;
+    if (state)
+        dogs_buffer[y / 8 * DISP_WIDTH + x] |= (1 << (y % 8));
+    else
+        dogs_buffer[y / 8 * DISP_WIDTH + x] &= ~(1 << (y % 8));
+}
+
+void draw_rect(int x, int y, int w, int h)
+{
+    for (int i = 0; i < w; i++) {
+        for (int j = 0; j < h; j++)
+            draw_pixel(x + i, y + j, true);
+    }
+}
+
+void draw_bitmap(int x, int y, const unsigned char *buffer)
+{
+    // Prepare source information
+    const unsigned char *src = buffer;
+    const int width = *src++;
+    const int height = *src++;
+    int sbit = 0;
+
+    for (int j = 0; j < height; j++) {
+        for (int i = 0; i < width; i++) {
+            draw_pixel(x + i, y + j, *src & (1 << sbit));
+            if (++sbit == 8) {
+                sbit = 0;
+                ++src;
+            }
+        }
+    }
+}
+
+static const unsigned char draw_number_bitmaps[10][10] = {
+    { 8, 8, // '0'
+        0b00011000,
+        0b00100100,
+        0b01000010,
+        0b01000010,
+        0b01000010,
+        0b01000010,
+        0b00100100,
+        0b00011000,
+    },
+    { 8, 8, // '1'
+        0b01111100,
+        0b00010000,
+        0b00010000,
+        0b00010000,
+        0b00010000,
+        0b00010000,
+        0b00010100,
+        0b00011000,
+    },
+    { 8, 8, // '2'
+        0b01111110,
+        0b00001000,
+        0b00010000,
+        0b00100000,
+        0b01000000,
+        0b01000010,
+        0b00100100,
+        0b00011000,
+    },
+    { 8, 8, // '3'
+        0b00011100,
+        0b00100010,
+        0b01000000,
+        0b00100000,
+        0b00111100,
+        0b01000000,
+        0b00100010,
+        0b00011100,
+    },
+    { 8, 8, // '4'
+        0b00100000,
+        0b00100000,
+        0b00100000,
+        0b00111110,
+        0b00100100,
+        0b00101000,
+        0b00110000,
+        0b00100000,
+    },
+    { 8, 8, // '5'
+        0b00011100,
+        0b00100010,
+        0b01000000,
+        0b01000000,
+        0b00100000,
+        0b00011110,
+        0b00000010,
+        0b01111110,
+    },
+    { 8, 8, // '6'
+        0b00011000,
+        0b00100100,
+        0b01000010,
+        0b01000110,
+        0b00111010,
+        0b00000010,
+        0b00000100,
+        0b00111000,
+    },
+    { 8, 8, // '7'
+        0b00001000,
+        0b00001000,
+        0b00001000,
+        0b00001000,
+        0b00010000,
+        0b00100000,
+        0b01000000,
+        0b01111110,
+    },
+    { 8, 8, // '8'
+        0b00011000,
+        0b00100100,
+        0b01000010,
+        0b00100100,
+        0b00111100,
+        0b01000010,
+        0b00100100,
+        0b00011000,
+    },
+    { 8, 8, // '9'
+        0b00011100,
+        0b00100010,
+        0b01000000,
+        0b01111000,
+        0b01000100,
+        0b01000010,
+        0b00100100,
+        0b00011000,
+    },
+};
+
+void draw_number(int x, int y, int number)
+{
+    if (number < 0)
+        number = -number;
+    int tmp = number;
+    int count;
+    for (count = 0; tmp; count++)
+        tmp /= 10;
+    if (count == 0)
+        count = 1;
+    x += count * 8;
+    do {
+        x -= 8;
+        draw_bitmap(x, y, draw_number_bitmaps[number % 10]);
+    } while (number /= 10);
+}
+