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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_

36
main.c
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@ -28,12 +28,35 @@ THD_FUNCTION(Thread2, 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);
dogs_buffer[0] = button_state;
dogs_buffer[1] = button_state;
dogs_buffer[2] = button_state;
dogs_buffer[3] = button_state;
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();
}
}
@ -65,3 +88,8 @@ int main(void)
while (1);
}
void HardFault_Handler()
{
while (1);
}

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