diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/button.c | 89 | ||||
| -rw-r--r-- | src/button.h | 23 | ||||
| -rw-r--r-- | src/main.c | 86 |
3 files changed, 181 insertions, 17 deletions
diff --git a/src/button.c b/src/button.c new file mode 100644 index 0000000..6adb495 --- /dev/null +++ b/src/button.c @@ -0,0 +1,89 @@ +#include "button.h" + +#define DEBOUNCE_HIGH_THRES (200) // 0-255 +#define DEBOUNCE_LOW_THRES (55) // 0-255 +#define LONGPRESS_THRES (25) // Hz +#define BUTTON_SCAN_FREQ (50) // Hz + +static volatile void (*onePressHandler[KEY_INDEX])(void) = { NULL }; +static volatile void (*longPressHandler[KEY_INDEX])(void) = { NULL }; + +void btn_init() +{ + GPIOA_ModeCfg(KEY1_PIN, GPIO_ModeIN_PD); + GPIOB_ModeCfg(KEY2_PIN, GPIO_ModeIN_PU); + + TMR3_TimerInit(FREQ_SYS/BUTTON_SCAN_FREQ); + TMR3_ITCfg(ENABLE, TMR0_3_IT_CYC_END); + PFIC_EnableIRQ(TMR3_IRQn); +} + +void btn_onOnePress(int key, void (*handler)(void)) +{ + if (key >= KEY_INDEX) return; + onePressHandler[key] = handler; +} + +void btn_onLongPress(int key, void (*handler)(void)) +{ + if (key >= KEY_INDEX) return; + longPressHandler[key] = handler; +} + +__HIGH_CODE +static int debounce(int key, int is_press) +{ + static int y[KEY_INDEX], flag[KEY_INDEX]; + if (key >= KEY_INDEX) return 0; + + // RC filter + y[key] -= y[key] >> 2; + y[key] += is_press ? 0x3F : 0; + + // Schmitt trigger + if ((y[key] > DEBOUNCE_HIGH_THRES) && (flag[key] == 0)) + flag[key] = 1; + if ((y[key] < DEBOUNCE_LOW_THRES) && (flag[key] == 1)) + flag[key] = 0; + + return flag[key]; +} + +__HIGH_CODE +static void check(int k) +{ + static int hold[KEY_INDEX], is_longpress[KEY_INDEX]; + if (k >= KEY_INDEX) return; // TODO: assert instead + + if (debounce(k, isPressed(k))) { + hold[k]++; + if (hold[k] >= LONGPRESS_THRES && is_longpress[k] == 0) { + is_longpress[k] = 1; + if (longPressHandler[k]) longPressHandler[k](); + } + } else { + if (hold[k] > 0 && hold[k] < LONGPRESS_THRES) { + if (onePressHandler[k]) onePressHandler[k](); + } + is_longpress[k] = 0; + hold[k] = 0; + } +} + +__HIGH_CODE +static void check_keys() +{ + for (int k=0; k<KEY_INDEX; k++) { + check(k); + } +} + +__INTERRUPT +__HIGH_CODE +void TMR3_IRQHandler(void) +{ + if (TMR3_GetITFlag(TMR0_3_IT_CYC_END)) { + check_keys(); + TMR3_ClearITFlag(TMR0_3_IT_CYC_END); + } +} diff --git a/src/button.h b/src/button.h new file mode 100644 index 0000000..234e45b --- /dev/null +++ b/src/button.h @@ -0,0 +1,23 @@ +#ifndef __BUTTON_H__ +#define __BUTTON_H__ + +#include "CH58x_common.h" + +enum keys { + KEY1 = 0, + KEY2, + KEY_INDEX, +}; + +#define KEY2_PIN (GPIO_Pin_22) // PB +#define KEY1_PIN (GPIO_Pin_1) // PA + +#define isPressed(key) ((key) ? \ + !GPIOB_ReadPortPin(KEY2_PIN) : \ + GPIOA_ReadPortPin(KEY1_PIN)) + +void btn_onOnePress(int key, void (*handler)(void)); +void btn_onLongPress(int key, void (*handler)(void)); +void btn_init(); + +#endif /* __BUTTON_H__ */ @@ -1,11 +1,29 @@ #include "CH58x_common.h"
#include "CH58x_sys.h"
+
#include "leddrv.h"
+#include "button.h"
+
+#define FB_WIDTH (LED_COLS * 4)
+#define SCROLL_IRATIO (16)
+#define FB_NUM_SPARE (8)
+#define SCAN_F (2000)
+#define SCAN_T (FREQ_SYS / SCAN_F)
-#define FB_WIDTH LED_COLS*4
-#define SCROLL_IRATIO 3
+#define NEXT_STATE(v, min, max) \
+ (v)++; \
+ if ((v) >= (max)) \
+ (v) = (min)
-uint16_t fb[2][FB_WIDTH];
+enum MODES {
+ NORMAL = 0,
+ DOWNLOAD,
+ POWER_OFF,
+ MODES_COUNT,
+};
+#define BRIGHTNESS_LEVELS (4)
+
+uint16_t fb[FB_NUM_SPARE][FB_WIDTH];
uint8_t test_font[][11] = {
0x00, 0xFE, 0x66, 0x62, 0x68, 0x78, 0x68, 0x60, 0x60, 0xF0, 0x00, // F
@@ -31,21 +49,41 @@ void draw2fb(uint16_t *fb, int c, int col) }
}
-volatile int fb_sel = 0;
+volatile int fb_sel, fb_num;
+volatile int mode, brightness;
+volatile uint64_t tick;
+
+__HIGH_CODE
+static void change_brightness()
+{
+ NEXT_STATE(brightness, 0, BRIGHTNESS_LEVELS);
+}
+
+__HIGH_CODE
+static void change_mode()
+{
+ NEXT_STATE(mode, 0, MODES_COUNT);
+}
+
+__HIGH_CODE
+static void change_fb()
+{
+ NEXT_STATE(fb_sel, 0, fb_num);
+}
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);
+ draw2fb(fb[0], 0, 8*(5-1));
+ draw2fb(fb[0], 1, 8*(6-1));
+ draw2fb(fb[0], 2, 8*(7-1));
+ draw2fb(fb[0], 3, 8*(8-1));
+ draw2fb(fb[0], 4, 8*(9-1));
+ draw2fb(fb[0], 5, 8*(10-1));
+ draw2fb(fb[0], 6, 8*(11-1));
+ draw2fb(fb[0], 7, 8*(12-1));
draw2fb(fb[1], 4, 8*5);
draw2fb(fb[1], 5, 8*6);
@@ -55,16 +93,31 @@ int main() draw2fb(fb[1], 1, 8*10);
draw2fb(fb[1], 2, 8*11);
draw2fb(fb[1], 3, 8*12);
+ fb_num = 2;
- TMR0_TimerInit(1500);
+ TMR0_TimerInit(SCAN_T);
TMR0_ITCfg(ENABLE, TMR0_3_IT_CYC_END);
PFIC_EnableIRQ(TMR0_IRQn);
- while (1) {
- }
+ btn_init();
+ btn_onOnePress(KEY1, change_mode);
+ btn_onOnePress(KEY2, change_fb);
+ btn_onLongPress(KEY1, change_brightness);
+
+ while (1) {
+ int i = 0;
+ while (isPressed(KEY2)) {
+ i++;
+ if (i>10) {
+ asm volatile("j 0x00");
+ }
+ DelayMs(200);
+ }
+ }
}
-__attribute__((interrupt))
+__INTERRUPT
+__HIGH_CODE
void TMR0_IRQHandler(void)
{
static int i, scroll;
@@ -77,7 +130,6 @@ void TMR0_IRQHandler(void) scroll++;
if (scroll >= (FB_WIDTH-LED_COLS)*SCROLL_IRATIO) {
scroll = 0;
- fb_sel = fb_sel == 0;
}
}
// This is a mess
|