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further reduce memory and ISR footprint

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This commit is contained in:
Vic 2020-12-23 14:49:38 +01:00
parent 4f722506e8
commit dc3eec9b0d
1 changed files with 29 additions and 18 deletions
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47
tasmota/xdrv_47_ftc532.ino
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@ -55,8 +55,8 @@
#define FTC532_KEYS_MAX 8
#define FTC532_STATE_WAITING 0x01
#define FTC532_STATE_READING 0x02
#define FTC532_STATE_WAITING false
#define FTC532_STATE_READING true
// Rising edge timing in microseconds
#define FTC532_BIT 377
@ -67,14 +67,16 @@
struct FTC532 {
volatile uint32_t rxtime; // ISR timer memory
volatile uint16_t errors; // error counter
volatile uint16_t sample = 0xF0F0; // buffer for bit-coded time samples
volatile uint16_t rxbit; // ISR bit counter
uint16_t keys = 0; // bitmap of active keys
uint16_t old_keys = 0; // previously active keys
volatile uint8_t state; // ISR state
volatile uint8_t valid; // did we ever receive valid data?
uint8_t keys = 0; // bitmap of active keys
uint8_t old_keys = 0; // previously active keys
volatile bool state; // ISR state
bool present = false;
#ifdef DEBUG_TASMOTA_DRIVER
volatile uint16_t errors; // error counter
volatile bool valid; // did we ever receive valid data?
#endif // DEBUG_TASMOTA_DRIVER
} Ftc532;
const char ftc532_json[] PROGMEM = "\"FTC532\":{\"KEYS\":\"";
@ -92,7 +94,9 @@ void ICACHE_RAM_ATTR ftc532_ISR(void) { // Hardware interrupt routine, trigger
return;
} // FTC532_STATE_READING starts here
if (time_diff > FTC532_LONG + FTC532_BIT) {
#ifdef DEBUG_TASMOTA_DRIVER
++Ftc532.errors; // frame error
#endif // DEBUG_TASMOTA_DRIVER
Ftc532.state = FTC532_STATE_WAITING;
return;
}
@ -104,16 +108,19 @@ void ICACHE_RAM_ATTR ftc532_ISR(void) { // Hardware interrupt routine, trigger
++Ftc532.rxbit;
if (Ftc532.rxbit == FTC532_KEYS_MAX * 2) { // frame complete
Ftc532.rxbit = 0;
Ftc532.valid = 1;
#ifdef DEBUG_TASMOTA_DRIVER
Ftc532.valid = true;
#endif // DEBUG_TASMOTA_DRIVER
Ftc532.state = FTC532_STATE_WAITING;
}
}
void ftc532_init(void) { // Initialize
if (!PinUsed(GPIO_FTC532)) { return; }
#ifdef DEBUG_TASMOTA_DRIVER
Ftc532.errors = 0;
Ftc532.valid = 0;
Ftc532.valid = false;
#endif // DEBUG_TASMOTA_DRIVER
Ftc532.state = FTC532_STATE_WAITING;
Ftc532.rxtime = micros();
pinMode(Pin(GPIO_FTC532), INPUT_PULLUP);
@ -122,15 +129,19 @@ void ftc532_init(void) { // Initialize
}
void ftc532_update(void) { // Usually called every 50 ms
// // WARNING: Reduce callback frequency if this code is enabled
// if ((Ftc532.sample & 0xF) != ((~Ftc532.sample >> 4) & 0xF) || ((Ftc532.sample >> 8) & 0xF) != ((~Ftc532.sample >> 12) & 0xF)) {
// AddLog_P(LOG_LEVEL_ERROR, PSTR("FTC: inverted sample does not match %x %x %x %x"),
// Ftc532.sample & 0xF, (~Ftc532.sample >> 4) & 0xF, (Ftc532.sample >> 8) & 0xF, (~Ftc532.sample >> 12) & 0xF);
// }
#ifdef DEBUG_TASMOTA_DRIVER
// WARNING: Reduce callback frequency if this code is enabled
if ((Ftc532.sample & 0xF) != ((~Ftc532.sample >> 4) & 0xF) || ((Ftc532.sample >> 8) & 0xF) != ((~Ftc532.sample >> 12) & 0xF)) {
AddLog_P(LOG_LEVEL_ERROR, PSTR("FTC: inverted sample does not match %x %x %x %x"),
Ftc532.sample & 0xF, (~Ftc532.sample >> 4) & 0xF, (Ftc532.sample >> 8) & 0xF, (~Ftc532.sample >> 12) & 0xF);
}
#endif // DEBUG_TASMOTA_DRIVER
Ftc532.keys = (Ftc532.sample & 0xF) | ((Ftc532.sample >> 4) & 0xF0);
if (Ftc532.keys != Ftc532.old_keys) {
// AddLog_P(LOG_LEVEL_DEBUG, PSTR("FTC: SAM=%04X KEY=%02X OLD=%02X ERR=%u OK=%u TIME=%lu Pin=%u"),
// Ftc532.sample, Ftc532.keys, Ftc532.old_keys, Ftc532.errors, Ftc532.valid, Ftc532.rxtime, Pin(GPIO_FTC532));
#ifdef DEBUG_TASMOTA_DRIVER
AddLog_P(LOG_LEVEL_DEBUG, PSTR("FTC: SAM=%04X KEY=%02X OLD=%02X ERR=%u OK=%u TIME=%lu Pin=%u"),
Ftc532.sample, Ftc532.keys, Ftc532.old_keys, Ftc532.errors, Ftc532.valid, Ftc532.rxtime, Pin(GPIO_FTC532));
#endif // DEBUG_TASMOTA_DRIVER
ftc532_publish();
Ftc532.old_keys = Ftc532.keys;
}
@ -171,4 +182,4 @@ bool Xdrv47(uint8_t function) {
return result;
}
#endif // USE_FTC532
#endif // USE_FTC532