mirror of https://github.com/arendst/Tasmota.git
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
/*
|
|
xdrv_60_shift595.ino - 74x595 shift register family support for Tasmota
|
|
|
|
Copyright (C) 2021 Jacek Ziółkowski
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifdef USE_SHIFT595
|
|
|
|
#define XDRV_60 60
|
|
|
|
const char kShift595Commands[] PROGMEM = "|" D_CMND_SHIFT595_DEVICE_COUNT ;
|
|
void (* const Shift595Command[])(void) PROGMEM = { &CmndShift595Devices };
|
|
|
|
struct Shift595 {
|
|
uint8_t pinSRCLK;
|
|
uint8_t pinRCLK;
|
|
uint8_t pinSER;
|
|
uint8_t pinOE;
|
|
uint8_t outputs;
|
|
uint8_t first;
|
|
bool connected = false;
|
|
} *Shift595 = nullptr;
|
|
|
|
void Shift595ConfigurePin(uint8_t pin, uint8_t value = 0) {
|
|
pinMode(pin, OUTPUT);
|
|
digitalWrite(pin, value);
|
|
}
|
|
|
|
void Shift595Init(void) {
|
|
if (PinUsed(GPIO_SHIFT595_SRCLK) && PinUsed(GPIO_SHIFT595_RCLK) && PinUsed(GPIO_SHIFT595_SER)) {
|
|
Shift595 = (struct Shift595*)calloc(1, sizeof(struct Shift595));
|
|
if (Shift595) {
|
|
Shift595->pinSRCLK = Pin(GPIO_SHIFT595_SRCLK);
|
|
Shift595->pinRCLK = Pin(GPIO_SHIFT595_RCLK);
|
|
Shift595->pinSER = Pin(GPIO_SHIFT595_SER);
|
|
|
|
Shift595ConfigurePin(Shift595->pinSRCLK);
|
|
Shift595ConfigurePin(Shift595->pinRCLK);
|
|
Shift595ConfigurePin(Shift595->pinSER);
|
|
|
|
if (PinUsed(GPIO_SHIFT595_OE)) {
|
|
Shift595->pinOE = Pin(GPIO_SHIFT595_OE);
|
|
Shift595ConfigurePin(Shift595->pinOE, 1);
|
|
}
|
|
|
|
Shift595->first = TasmotaGlobal.devices_present;
|
|
Shift595->outputs = Settings->shift595_device_count * 8;
|
|
TasmotaGlobal.devices_present += Shift595->outputs;
|
|
Shift595->connected = true;
|
|
AddLog(LOG_LEVEL_DEBUG, PSTR("595: Controlling relays POWER%d to POWER%d"), Shift595->first + 1, Shift595->first + Shift595->outputs);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Shift595LatchPin(uint8_t pin) {
|
|
digitalWrite(pin, 1);
|
|
digitalWrite(pin, 0);
|
|
}
|
|
|
|
void Shift595SwitchRelay(void) {
|
|
if (Shift595 && Shift595->connected == true) {
|
|
for (uint32_t i = 0; i < Shift595->outputs; i++) {
|
|
uint8_t relay_state = bitRead(XdrvMailbox.index, Shift595->first + Shift595->outputs -1 -i);
|
|
digitalWrite(Shift595->pinSER, Settings->flag5.shift595_invert_outputs ? !relay_state : relay_state);
|
|
Shift595LatchPin(Shift595->pinSRCLK);
|
|
}
|
|
|
|
Shift595LatchPin(Shift595->pinRCLK);
|
|
|
|
if (PinUsed(GPIO_SHIFT595_OE)) {
|
|
digitalWrite(Shift595->pinOE, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
void CmndShift595Devices(void) {
|
|
if ((XdrvMailbox.payload > 0) && (XdrvMailbox.payload <= 3)) {
|
|
Settings->shift595_device_count = (1 == XdrvMailbox.payload) ? SHIFT595_DEVICE_COUNT : XdrvMailbox.payload;
|
|
TasmotaGlobal.restart_flag = 2;
|
|
}
|
|
ResponseCmndNumber(Settings->shift595_device_count);
|
|
}
|
|
|
|
/*********************************************************************************************\
|
|
* Interface
|
|
\*********************************************************************************************/
|
|
|
|
bool Xdrv60(uint8_t function) {
|
|
bool result = false;
|
|
|
|
if (FUNC_PRE_INIT == function) {
|
|
Shift595Init();
|
|
} else if (Shift595) {
|
|
switch (function) {
|
|
case FUNC_SET_POWER:
|
|
Shift595SwitchRelay();
|
|
break;
|
|
case FUNC_COMMAND:
|
|
result = DecodeCommand(kShift595Commands, Shift595Command);
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#endif // USE_SHIFT595
|