demo of driving MAX2719 dot matrix displays with STM32F103 Bluepill
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f103-dotmatrix/project/main.c

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1.9 KiB

#include "main.h"
#include "hw_init.h"
#include "com/debug.h"
#include "com/com_fileio.h"
#include "com/com_iface.h"
#include "bus/event_queue.h"
#include "bus/event_handler.h"
#include "utils/timebase.h"
#include "colorled.h"
#include "display.h"
#include <math.h>
#include <sbmp.h>
#include "matrixdsp.h"
static void poll_subsystems(void)
{
// poll serial buffers (runs callback)
com_poll(debug_iface);
com_poll(data_iface);
// run queued tasks
tq_poll();
// handle queued events
Event evt;
until_timeout(2) { // take 2 ms max
if (eq_take(&evt)) {
run_event_handler(&evt);
} else {
break;
}
}
}
int main(void)
{
hw_init();
// display_init();
banner("*** LED MATRIX DEMO ***");
banner_info("(c) Ondrej Hruska, 2016");
banner_info("Katedra mereni K338, CVUT FEL");
ms_time_t last;
mdsp_send_command_all(CMD_DECODE_MODE, 0x00);
mdsp_send_command_all(CMD_SCAN_LIMIT, 0x07);
mdsp_send_command_all(CMD_SHUTDOWN, 0x01);
mdsp_send_command_all(CMD_DISPLAY_TEST, 0x00);
mdsp_send_command_all(CMD_INTENSITY, 0x05);
mdsp_clear();
// ---
const uint16_t inva0[] = {
0b00100000100,
0b00010001000,
0b00111111100,
0b01101110110,
0b11111111111,
0b10111111101,
0b10100000101,
0b00011011000,
};
const uint16_t inva1[] = {
0b00100000100,
0b10010001001,
0b10111111101,
0b11101110111,
0b11111111111,
0b01111111110,
0b00100000100,
0b01000000010,
};
while (1) {
if (ms_loop_elapsed(&last, 500)) {
GPIOC->ODR ^= 1 << 13;
}
poll_subsystems();
for (int i = 0; i < 8; i++) {
uint32_t x = __RBIT(inva0[7-i]);
mdsp_set(i, x >> 21);
mdsp_set(8+i, (x >> 29) & 0b111);
}
delay_ms(500);
for (int i = 0; i < 8; i++) {
uint32_t x = __RBIT(inva1[7-i]);
mdsp_set(i, x >> 21);
mdsp_set(8+i, (x >> 29) & 0b111);
}
delay_ms(500);
}
}
void dlnk_rx(SBMP_Datagram *dg)
{
dbg("Rx dg type %d", dg->type);
}