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led: add basic Charlieplexing scan

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Dien-Nhung Nguyen-Phu
2024-05-19 16:22:51 +07:00
parent 7d7389cac5
commit 90cdb61063
4 changed files with 238 additions and 15 deletions
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86
src/main.c
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@@ -1,30 +1,88 @@
#include "CH58x_common.h"
#include "CH58x_sys.h"
#include "leddrv.h"
void led_init(void)
#define FB_WIDTH LED_COLS*4
#define SCROLL_IRATIO 3
uint16_t fb[2][FB_WIDTH];
uint8_t test_font[][11] = {
0x00, 0xFE, 0x66, 0x62, 0x68, 0x78, 0x68, 0x60, 0x60, 0xF0, 0x00, // F
0x00, 0x7C, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x7C, 0x00, // O
0x00, 0x7C, 0xC6, 0xC6, 0x60, 0x38, 0x0C, 0xC6, 0xC6, 0x7C, 0x00, // S
0x00, 0x7C, 0xC6, 0xC6, 0x60, 0x38, 0x0C, 0xC6, 0xC6, 0x7C, 0x00, // S
0x00, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, // A
0x00, 0x7C, 0xC6, 0xC6, 0x60, 0x38, 0x0C, 0xC6, 0xC6, 0x7C, 0x00, // S
0x00, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00, // I
0x00, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, // A
};
void draw2fb(uint16_t *fb, int c, int col)
{
GPIOA_SetBits(GPIO_Pin_10);
GPIOA_ResetBits(GPIO_Pin_12);
GPIOA_ModeCfg(GPIO_Pin_10, GPIO_ModeOut_PP_5mA);
GPIOA_ModeCfg(GPIO_Pin_12, GPIO_ModeOut_PP_5mA);
uint16_t tmpfb[8] = {0};
for (int i=0; i<8; i++) {
for (int j=0; j<11; j++) {
tmpfb[i] |= ((test_font[c][j] >> (8-i)) & 0x01) << j;
}
}
for (int i=0; i<8; i++) {
fb[col+i] = tmpfb[i];
}
}
void led_toggle(void)
{
GPIOA_InverseBits(GPIO_Pin_10);
GPIOA_InverseBits(GPIO_Pin_12);
}
volatile int fb_sel = 0;
int main()
{
SetSysClock(CLK_SOURCE_PLL_60MHz);
led_init();
draw2fb(fb[0], 0, 8*5);
draw2fb(fb[0], 1, 8*6);
draw2fb(fb[0], 2, 8*7);
draw2fb(fb[0], 3, 8*8);
draw2fb(fb[0], 4, 8*9);
draw2fb(fb[0], 5, 8*10);
draw2fb(fb[0], 6, 8*11);
draw2fb(fb[0], 7, 8*12);
while(1)
{
mDelaymS(100);
led_toggle();
draw2fb(fb[1], 4, 8*5);
draw2fb(fb[1], 5, 8*6);
draw2fb(fb[1], 6, 8*7);
draw2fb(fb[1], 7, 8*8);
draw2fb(fb[1], 0, 8*9);
draw2fb(fb[1], 1, 8*10);
draw2fb(fb[1], 2, 8*11);
draw2fb(fb[1], 3, 8*12);
TMR0_TimerInit(1500);
TMR0_ITCfg(ENABLE, TMR0_3_IT_CYC_END);
PFIC_EnableIRQ(TMR0_IRQn);
while (1) {
}
}
__attribute__((interrupt))
void TMR0_IRQHandler(void)
{
static int i, scroll;
if (TMR0_GetITFlag(TMR0_3_IT_CYC_END)) {
i += 2;
if (i >= LED_COLS) {
i = 0;
scroll++;
if (scroll >= (FB_WIDTH-LED_COLS)*SCROLL_IRATIO) {
scroll = 0;
fb_sel = fb_sel == 0;
}
}
// This is a mess
led_write2dcol(i/2, fb[fb_sel][i+scroll/SCROLL_IRATIO], fb[fb_sel][i+scroll/SCROLL_IRATIO+1]);
TMR0_ClearITFlag(TMR0_3_IT_CYC_END);
}
}