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

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1.7 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"
#include "max2719.h"
#include "dotmatrix.h"
static void poll_subsystems(void);
static DotMatrix_Cfg *dmtx;
int main(void)
{
hw_init();
banner("*** LED MATRIX DEMO ***");
banner_info("(c) Ondrej Hruska, 2016");
banner_info("Katedra mereni K338, CVUT FEL");
DotMatrix_Init dmtx_cfg;
dmtx_cfg.CS_GPIOx = GPIOA;
dmtx_cfg.CS_PINx = GPIO_Pin_4;
dmtx_cfg.SPIx = SPI1;
dmtx_cfg.cols = 2;
dmtx_cfg.rows = 2;
dmtx = dmtx_init(&dmtx_cfg);
dmtx_intensity(dmtx, 2);
ms_time_t last;
while (1) {
if (ms_loop_elapsed(&last, 500)) {
GPIOC->ODR ^= 1 << 13;
}
poll_subsystems();
// 1
dmtx_clear(dmtx);
for (int i = 0; i <= 15; i++) {
dmtx_set(dmtx, i, i, true);
dmtx_set(dmtx, i+2, i-2, true);
dmtx_set(dmtx, i-2, i+2, true);
}
dmtx_show(dmtx);
delay_ms(500);
// 2
dmtx_clear(dmtx);
for (int i = 0; i <= 15; i++) {
dmtx_set(dmtx, 15-i, i, true);
dmtx_set(dmtx, 15-(i+2), i-2, true);
dmtx_set(dmtx, 15-(i-2), i+2, true);
}
dmtx_show(dmtx);
delay_ms(500);
}
}
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;
}
}
}
void dlnk_rx(SBMP_Datagram *dg)
{
dbg("Rx dg type %d", dg->type);
}