electro
/
reflower
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

remove gpio isr, polling debouncer works better

Browse Source
gui-framework
Ondřej Hruška 4 years ago
parent 44cf637944
commit 465a17789d
Signed by: MightyPork
GPG Key ID: 2C5FD5035250423D
1 changed files with 55 additions and 301 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 356
      main/knob.c

356
main/knob.c
Unescape View File

@ -8,347 +8,101 @@ const int pushPin = 5;
const int wheelPin1 = 18;
const int wheelPin2 = 23;
//const int sigPin1 = 12;
//const int sigPin2 = 14;
#define DEBOUNCE_WHEEL_MS 3
#define DEBOUNCE_BTN_MS 10
static void handle_pushbtn(void *arg);
static void handle_wheel(void *arg);
static void debounce_service(void *arg);
static TaskHandle_t hDebouncer;
void knob_init() {
printf("Knob init\n");
// gpio_config_t cfgWheel = {
// .pin_bit_mask = (1 << wheelPin1) /*| (1 << wheelPin2)*/,
// .mode = GPIO_MODE_INPUT,
// .pull_up_en = 1,
// .intr_type = GPIO_INTR_NEGEDGE, // neg means active
// };
// gpio_config(&cfgWheel);
gpio_config_t cfgPush = {
.pin_bit_mask = (1 << pushPin) | (1 << wheelPin1),
.pin_bit_mask = (1 << pushPin) | (1 << wheelPin1) | (1 << wheelPin2),
.mode = GPIO_MODE_INPUT,
.pull_up_en = 1,
.intr_type = GPIO_INTR_ANYEDGE, // neg means active
.pull_up_en = 1
};
gpio_config(&cfgPush);
// wheel2 without itr
cfgPush.intr_type = GPIO_INTR_DISABLE;
cfgPush.pin_bit_mask = (1 << wheelPin2);
gpio_config(&cfgPush);
// gpio_config_t output = {
// .pin_bit_mask = (1<<sigPin1)|(1<<sigPin2),
// .mode = GPIO_MODE_OUTPUT
// };
// gpio_config(&output);
gpio_install_isr_service(0);
gpio_intr_enable(pushPin);
gpio_intr_enable(wheelPin1);
// gpio_intr_enable(wheelPin2);
gpio_isr_handler_add(pushPin, handle_pushbtn, (void *)0);
gpio_isr_handler_add(wheelPin1, handle_wheel, (void *)0);
//gpio_isr_handler_add(wheelPin2, handle_wheel, (void *)1);
int rv = xTaskCreate(debounce_service, "debo", 2048, NULL, 6, &hDebouncer);
int rv = xTaskCreate(debounce_service, "debo", 4096, NULL, 6, &hDebouncer);
assert (rv == pdPASS);
}
#if 0
enum state {
S_11 = 0,
S_FWD_1_01 = 1,
S_FWD_2_00 = 2,
S_FWD_3_10 = 3,
S_BCK_1_10 = 4,
S_BCK_2_00 = 5,
S_BCK_3_01 = 6,
S_ILLEGAL = 7,
};
#define SW_FWD 0b10000000
#define SW_BCK 0b01000000
static enum state wheelState = S_11;
const uint8_t switch_table[28] = {
/* -- S_11 -- */
S_ILLEGAL, /* 00 ILLEGAL */
S_FWD_1_01, /* 01 ADVANCE */
S_BCK_1_10, /* 10 BACK */
S_11, /* 11 */
/* -- S_FWD_1_01 -- */
S_FWD_2_00, /* 00 ADVANCE */
S_FWD_1_01, /* 01 */
S_FWD_3_10, /* 10 ILLEGAL */
S_11, /* 11 ABORT */
/* -- S_FWD_2_00 -- */
S_FWD_2_00, /* 00 */
S_FWD_1_01, /* 01 ABORT */
S_FWD_3_10, /* 10 ADVANCE */
S_ILLEGAL, /* 11 ILLEGAL */
/* -- S_FWD_3_10 -- */
S_FWD_2_00, /* 00 ABORT */
S_FWD_1_01, /* 01 ILLEGAL */
S_FWD_3_10, /* 10 */
SW_FWD | S_11, /* 11 ADVANCE */
/* -- S_BCK_1_10 -- */
S_BCK_2_00, /* 00 ADVANCE */
S_BCK_3_01, /* 01 ILLEGAL */
S_BCK_1_10, /* 10 */
S_11, /* 11 ABORT */
/* -- S_BCK_2_00 -- */
S_BCK_2_00, /* 00 */
S_BCK_3_01, /* 01 */
S_BCK_1_10, /* 10 ABORT */
S_ILLEGAL, /* 11 */
/* -- S_BCK_3_01 -- */
S_BCK_2_00, /* 00 */
S_BCK_3_01, /* 01 */
S_BCK_1_10, /* 10 */
SW_BCK | S_11, /* 11 */
};
static uint8_t OldEnc = 0b00;
#endif
static void handle_wheel(void *arg) {
static uint32_t negedge_time = 0;
static uint32_t posedge_time = 0;
static bool last_edge_level = 1;
static bool flipflop = 0;
const uint32_t inputs = gpio_input_get();
const bool a = 0 != (inputs & (1 << wheelPin1)); // neg = active
const bool b = 0 != (inputs & (1 << wheelPin2));
// This discards "false rising edge" when we get triggered by a rising edge
//
if (a == last_edge_level) {
return;
}
last_edge_level = a;
const uint32_t time = xTaskGetTickCount();
static void __attribute__((noreturn)) debounce_service(void *arg) {
struct debo {
bool state;
uint32_t start_time;
uint32_t debo_time;
};
flipflop ^= 1;
// gpio_set_level(sigPin2, flipflop);
struct debo state[3] = {
{.debo_time = pdMS_TO_TICKS(DEBOUNCE_BTN_MS)}, // push
{.debo_time = pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS)}, // wheel input 1
{.debo_time = pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS)} // wheel input 2
};
int dir = 0;
if (!a) {
if ((time - posedge_time) > pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS)) {
// negedge
negedge_time = time;
// gpio_set_level(sigPin1, 0);
}
} else {
// posedge
if ((time - negedge_time) > pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS)) {
posedge_time = time;
if (b) {
dir = -1;
} else {
dir = 1;
}
// gpio_set_level(sigPin1, 1);
}
}
while (1) {
vTaskDelay(pdMS_TO_TICKS(1));
#if 0
const uint32_t inputs = gpio_input_get();
bool a = 0 == (inputs & (1 << wheelPin1)); // neg = active
bool b = 0 == (inputs & (1 << wheelPin2));
uint32_t now = xTaskGetTickCount();
#define ENCODER_POS1 1
#define ENCODER_POS2 2
#define ENCODER_POS3 3
#define ENCODER_POS0 0
const uint32_t inputs = gpio_input_get();
uint8_t NewEnc = a | (b<<1);
if (NewEnc ^ OldEnc) { // Encoder value changed???
switch(NewEnc) {
case ENCODER_POS1 : // 01
if (OldEnc == ENCODER_POS0) // 00
dir--;
else
dir++;
break;
case ENCODER_POS3 : // 11
if (OldEnc == ENCODER_POS1) // 01
dir--;
else
dir++;
break;
case ENCODER_POS2 : // 10
if (OldEnc == ENCODER_POS3) // 11
dir--;
else
dir++;
break;
case ENCODER_POS0 : // 00
if (OldEnc == ENCODER_POS2) // 10
dir--;
else
dir++;
break;
bool input[3] = {
(inputs & (1 << pushPin)) == 0,
(inputs & (1 << wheelPin1)) != 0,
(inputs & (1 << wheelPin2)) != 0,
};
OldEnc = NewEnc;
}; // end if encoder value changed.
#endif
#if 0
// Omron version
int which = (int)arg;
enum change {
CHG_NONE = 2,
CHG_SET = 1,
CHG_CLEAR = 0,
};
const uint32_t inputs = gpio_input_get();
enum change changes[3] = {CHG_NONE, CHG_NONE, CHG_NONE};
bool a = 0 == (inputs & (1 << wheelPin1)); // neg = active
bool b = 0 == (inputs & (1 << wheelPin2));
for (int i=0; i<3;i++) {
if (input[i] == !state[i].state) {
// Change detected
if (state[i].start_time == 0) {
// start counting
state[i].start_time = now;
}
if (which == 0) { // itr from A
if (a) {
if (b) {
dir = -1;
if ((state[i].start_time != 0) && (now - state[i].start_time > state[i].debo_time)) {
state[i].state = !state[i].state;
changes[i] = state[i].state ? CHG_SET : CHG_CLEAR;
}
}
else {
dir = 1;
// returned back to original, reset counter
state[i].start_time = 0;
}
}
}
else { // itr from B
if (b) {
if (a) {
dir = 1;
uint32_t signal = 0;
// Wheel logic
if (changes[1] == CHG_SET) {
if (state[2].state) {
signal |= 0b01;
}
else {
dir = -1;
signal |= 0b10;
}
}
}
#endif
#if 0
// Naive version
int which = arg;
const uint32_t inputs = gpio_input_get();
bool a = 0 == (inputs & (1 << wheelPin1)); // neg = active
bool b = 0 == (inputs & (1 << wheelPin2));
if (which == 0) { // itr from A
if (b) {
dir = -1;
} /*else {
dir = 1;
}*/
}
else { // itr from B
if (a) {
dir = 1;
} /*else {
dir = -1;
}*/
}
#endif
#if 0
// More complex version
const uint32_t inputs = gpio_input_get();
const uint8_t ab =
(((inputs >> wheelPin2) & 1) << 1) |
((inputs >> wheelPin1) & 1);
if (wheelState == S_ILLEGAL) {
if (ab != 0b11) {
return;
// knob
if (changes[0] != CHG_NONE) {
signal |= 0b100 << changes[0];
}
}
uint8_t next = switch_table[wheelState*4 + ab];
if (next & SW_FWD) dir = 1;
if (next & SW_BCK) dir = -1;
next &= ~(SW_FWD | SW_BCK);
wheelState = next;
#endif
if (dir != 0) {
BaseType_t higherWoken = 0;
xTaskNotifyFromISR(hGuiThread, dir == 1 ? 0b10 : 0b01, eSetBits, &higherWoken);
if (higherWoken) portYIELD_FROM_ISR();
}
}
static void __attribute__((noreturn)) debounce_service(void *arg) {
bool push_state = 0;
uint32_t push_change_time = 0;
while (1) {
// uint32_t value = 0;
// xTaskNotifyWait(0, ULONG_MAX, &value, pdMS_TO_TICKS(1));
vTaskDelay(pdMS_TO_TICKS(1));
uint32_t now = xTaskGetTickCount();
const uint32_t inputs = gpio_input_get();
bool pushed = (inputs & (1 << pushPin)) == 0;
if (pushed) { // event "PUSHED"
if (!push_state) {
if (push_change_time == 0) {
push_change_time = now;
}
} else {
push_change_time = 0;
}
}
else { // event "RELEASED"
if (push_state) {
if (push_change_time == 0) {
push_change_time = now;
}
} else {
push_change_time = 0;
}
}
if ((push_change_time != 0) && (now - push_change_time > pdMS_TO_TICKS(DEBOUNCE_BTN_MS))) {
push_state = !push_state;
// send event to GUI
if (signal != 0) {
BaseType_t higherWoken = 0;
xTaskNotifyFromISR(hGuiThread, 0b100<<push_state, eSetBits, &higherWoken);
xTaskNotifyFromISR(hGuiThread, signal, eSetBits, &higherWoken);
if (higherWoken) portYIELD_FROM_ISR();
}
}
}
static void handle_pushbtn(void *arg) {
// const uint32_t inputs = gpio_input_get();
// bool pushed = (inputs & (1 << pushPin)) == 0;
//
// BaseType_t higherWoken = 0;
// xTaskNotifyFromISR(hDebouncer, 1<<pushed, eSetBits, &higherWoken);
// if (higherWoken) portYIELD_FROM_ISR();
}

Write Preview
Loading…
Cancel
Save