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stm-game
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display optimization; sprites

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master
Clyne 4 years ago
parent c4e8f26cbb
commit fdf1a42bba
7 changed files with 174 additions and 84 deletions
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1
STM32L011x4.ld
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@ -79,6 +79,7 @@ REGION_ALIAS("DATA_RAM_LMA", flash0);
REGION_ALIAS("BSS_RAM", ram0);
/* RAM region to be used for the default heap.*/
/* tcsullivan: Set to ram1 so bss reports actual size used. */
REGION_ALIAS("HEAP_RAM", ram1);
/* Generic rules inclusion.*/

9
buttons.h
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@ -12,6 +12,15 @@
#ifndef BUTTONS_H_
#define BUTTONS_H_
#define BUTTON_JOYUL (1 << 7)
#define BUTTON_JOYUR (1 << 6)
#define BUTTON_JOYDR (1 << 5)
#define BUTTON_JOYDL (1 << 4)
#define BUTTON_JOY (1 << 3)
#define BUTTON_1 (1 << 2)
#define BUTTON_2 (1 << 1)
#define BUTTON_3 (1 << 0)
extern unsigned char button_state;
void buttons_init();

10
cfg/halconf.h
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@ -142,7 +142,7 @@
* @brief Enables the SERIAL subsystem.
*/
#if !defined(HAL_USE_SERIAL) || defined(__DOXYGEN__)
#define HAL_USE_SERIAL TRUE
#define HAL_USE_SERIAL FALSE
#endif
/**
@ -230,7 +230,7 @@
* @note Disabling this option saves both code and data space.
*/
#if !defined(ADC_USE_WAIT) || defined(__DOXYGEN__)
#define ADC_USE_WAIT TRUE
#define ADC_USE_WAIT FALSE
#endif
/**
@ -238,7 +238,7 @@
* @note Disabling this option saves both code and data space.
*/
#if !defined(ADC_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
#define ADC_USE_MUTUAL_EXCLUSION TRUE
#define ADC_USE_MUTUAL_EXCLUSION FALSE
#endif
/*===========================================================================*/
@ -447,7 +447,7 @@
* @note Disabling this option saves both code and data space.
*/
#if !defined(SPI_USE_WAIT) || defined(__DOXYGEN__)
#define SPI_USE_WAIT TRUE
#define SPI_USE_WAIT FALSE
#endif
/**
@ -463,7 +463,7 @@
* @note Disabling this option saves both code and data space.
*/
#if !defined(SPI_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
#define SPI_USE_MUTUAL_EXCLUSION TRUE
#define SPI_USE_MUTUAL_EXCLUSION FALSE
#endif
/**

2
cfg/mcuconf.h
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@ -131,7 +131,7 @@
* SERIAL driver system settings.
*/
#define STM32_SERIAL_USE_USART2 FALSE
#define STM32_SERIAL_USE_LPUART1 TRUE
#define STM32_SERIAL_USE_LPUART1 FALSE
/*
* SPI driver system settings.

71
dogs.c
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@ -17,10 +17,16 @@
#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;
static void dogs_init_display();
static void dogs_spi_callback(SPIDriver *spid)
{
if (spiIsBufferComplete(spid))
dogs_spi_done = true;
}
void dogs_init()
{
@ -35,27 +41,32 @@ void dogs_init()
palSetPad(GPIOC, 14);
palClearPad(GPIOC, 15);
static const SPIConfig ls_spicfg = {
static const SPIConfig spicfg = {
false,
NULL,
SPI_CR1_BR_2 | SPI_CR1_BR_1,
dogs_spi_callback,
0, // cr1
0
};
spiStart(&SPID1, &ls_spicfg);
spiStart(&SPID1, &spicfg);
dogs_init_display();
dogs_clear();
dogs_flush();
}
void dogs_write_data(unsigned char byte)
{
SET_DATA;
spiSend(&SPID1, 1, &byte);
dogs_spi_done = false;
spiStartSend(&SPID1, 1, &byte);
while (!dogs_spi_done);
}
void dogs_write_cmd(unsigned char byte)
{
SET_CMD;
spiSend(&SPID1, 1, &byte);
dogs_spi_done = false;
spiStartSend(&SPID1, 1, &byte);
while (!dogs_spi_done);
}
void dogs_set_column(unsigned int col)
@ -144,10 +155,17 @@ void dogs_init_display()
void dogs_clear()
{
unsigned char *ptr = dogs_buffer;
for (unsigned int i = 0; i < sizeof(dogs_buffer); i++) {
unsigned int count = sizeof(dogs_buffer);
for (; count > 8; count -= 8) {
*ptr++ = 0;
*ptr++ = 0;
*ptr++ = 0;
*ptr++ = 0;
*ptr++ = 0;
*ptr++ = 0;
*ptr++ = 0;
*ptr++ = 0;
}
dogs_flush();
}
void dogs_flush()
@ -157,9 +175,40 @@ void dogs_flush()
for (int page = 0; page < 8; page++) {
dogs_set_page(page);
dogs_set_column(30);
for (int i = 0; i < 102; i++)
dogs_write_data(*ptr++);
SET_DATA;
dogs_spi_done = false;
spiStartSend(&SPID1, 102, ptr);
ptr += 102;
while (!dogs_spi_done);
}
CS_HIGH;
}
void draw_pixel(int x, int y, bool state)
{
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_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;
}
}
}
}

3
dogs.h
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@ -21,5 +21,8 @@ void dogs_init();
void dogs_clear();
void dogs_flush();
void draw_pixel(int x, int y, bool state);
void draw_bitmap(int x, int y, const unsigned char *buffer);
#endif // DOGS_H_

162
main.c
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@ -1,67 +1,95 @@
/**
* main.c - Firmware entry point and main loop for game or testing.
* 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 "buttons.h"
#include "ch.h"
#include "dogs.h"
#include "hal.h"
/*
* Progress:
* - Serial through LPUART1 works (38400 baud, takes over swdio pins)
* - Display comm. over SPI, can clear screen
* - Can read buttons through PAL (through interrupts now)
*/
THD_WORKING_AREA(waThread2, 96);
THD_FUNCTION(Thread2, arg)
{
(void)arg;
dogs_init();
while (1) {
chThdSleepMilliseconds(100);
dogs_buffer[0] = button_state;
dogs_buffer[1] = button_state;
dogs_buffer[2] = button_state;
dogs_buffer[3] = button_state;
dogs_flush();
}
}
THD_TABLE_BEGIN
THD_TABLE_THREAD(0, "game", waThread2, Thread2, NULL)
THD_TABLE_END
int main(void)
{
halInit();
chSysInit();
buttons_init();
// Below code for serial -- note that it cuts off debugging, and MUST be used in a thread
//chThdSleepMilliseconds(2000);
//palSetPadMode(GPIOA, 13, PAL_MODE_ALTERNATE(6));
//palSetPadMode(GPIOA, 14, PAL_MODE_ALTERNATE(6));
//sdStart(&LPSD1, NULL);
//chnWrite(&LPSD1, (const uint8_t *)"Hello World!\r\n", 14);
/* This is now the idle thread loop, you may perform here a low priority
task but YOU MUST NEVER TRY TO SLEEP OR WAIT in this loop. Note that
this tasks runs at the lowest priority level so any instruction added
here will be executed after all other tasks have been started. */
while (1);
}
/**
* main.c - Firmware entry point and main loop for game or testing.
* 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 "buttons.h"
#include "ch.h"
#include "dogs.h"
#include "hal.h"
/*
* Progress:
* - Serial through LPUART1 works (38400 baud, takes over swdio pins)
* - Display comm. over SPI, can clear screen
* - Can read buttons through PAL (through interrupts now)
*/
THD_WORKING_AREA(waThread2, 96);
THD_FUNCTION(Thread2, arg)
{
(void)arg;
dogs_init();
const unsigned char testbitmap[] = {
8, 8,
0b00111100,
0b01100110,
0b01000010,
0b01111110,
0b01100110,
0b01000010,
0b11000000,
0b11000000,
};
int x = 0, y = 0;
while (1) {
chThdSleepMilliseconds(100);
unsigned char b = button_state;
if ((b & (BUTTON_JOYUR | BUTTON_JOYUL)) == (BUTTON_JOYUR | BUTTON_JOYUL))
y--;
else if ((b & (BUTTON_JOYUR | BUTTON_JOYDR)) == (BUTTON_JOYUR | BUTTON_JOYDR))
x++;
else if ((b & (BUTTON_JOYDR | BUTTON_JOYDL)) == (BUTTON_JOYDR | BUTTON_JOYDL))
y++;
else if ((b & (BUTTON_JOYDL | BUTTON_JOYUL)) == (BUTTON_JOYDL | BUTTON_JOYUL))
x--;
dogs_clear();
draw_bitmap(x, y, testbitmap);
dogs_flush();
}
}
THD_TABLE_BEGIN
THD_TABLE_THREAD(0, "game", waThread2, Thread2, NULL)
THD_TABLE_END
int main(void)
{
halInit();
chSysInit();
buttons_init();
// Below code for serial -- note that it cuts off debugging, and MUST be used in a thread
//chThdSleepMilliseconds(2000);
//palSetPadMode(GPIOA, 13, PAL_MODE_ALTERNATE(6));
//palSetPadMode(GPIOA, 14, PAL_MODE_ALTERNATE(6));
//sdStart(&LPSD1, NULL);
//chnWrite(&LPSD1, (const uint8_t *)"Hello World!\r\n", 14);
/* This is now the idle thread loop, you may perform here a low priority
task but YOU MUST NEVER TRY TO SLEEP OR WAIT in this loop. Note that
this tasks runs at the lowest priority level so any instruction added
here will be executed after all other tasks have been started. */
while (1);
}
void HardFault_Handler()
{
while (1);
}

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