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Merge pull request #11301 from barbudor/pr_pcf8574_inputs 

Pcf8574 improvements (final)
This commit is contained in:
Theo Arends 2021-03-11 18:03:54 +01:00 committed by GitHub
parent 121a5162d0 ba41a57331
commit 14c35bf8ad
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 116 additions and 18 deletions
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3
tasmota/my_user_config.h
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@ -575,6 +575,9 @@
// #define USE_CHIRP // [I2cDriver33] Enable CHIRP soil moisture sensor (variable I2C address, default 0x20)
// #define USE_PAJ7620 // [I2cDriver34] Enable PAJ7620 gesture sensor (I2C address 0x73) (+2.5k code)
// #define USE_PCF8574 // [I2cDriver2] Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x26 and 0x39 - 0x3F) (+1k9 code)
// #define USE_PCF8574_SENSOR // enable PCF8574 inputs and outputs in SENSOR message
// #define USE_PCF8574_DISPLAYINPUT // enable PCF8574 inputs display in Web page
// #define USE_PCF8574_MQTTINPUT // enable MQTT message & rule process on input change detection : stat/%topic%/PCF8574_INP = {"Time":"2021-03-07T16:19:23+01:00","PCF8574-1_INP":{"D1":1}}
// #define USE_HIH6 // [I2cDriver36] Enable Honeywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
// #define USE_DHT12 // [I2cDriver41] Enable DHT12 humidity and temperature sensor (I2C address 0x5C) (+0k7 code)
// #define USE_DS1624 // [I2cDriver42] Enable DS1624, DS1621 temperature sensor (I2C addresses 0x48 - 0x4F) (+1k2 code)

129
tasmota/xdrv_28_pcf8574.ino
View File

@ -37,37 +37,45 @@ struct PCF8574 {
uint8_t pin[64];
uint8_t address[MAX_PCF8574];
uint8_t pin_mask[MAX_PCF8574] = { 0 };
#ifdef USE_PCF8574_MQTTINPUT
uint8_t last_input[MAX_PCF8574] = { 0 };
#endif
uint8_t max_connected_ports = 0; // Max numbers of devices comming from PCF8574 modules
uint8_t max_devices = 0; // Max numbers of PCF8574 modules
char stype[9];
bool type = false;
} Pcf8574;
uint8_t Pcf8574Read(uint8_t idx)
{
Wire.requestFrom(Pcf8574.address[idx],(uint8_t)1);
return Wire.read();
}
uint8_t Pcf8574Write(uint8_t idx)
{
Wire.beginTransmission(Pcf8574.address[idx]);
Wire.write(Pcf8574.pin_mask[idx]);
return Wire.endTransmission();
}
void Pcf8574SwitchRelay(void)
{
for (uint32_t i = 0; i < TasmotaGlobal.devices_present; i++) {
uint8_t relay_state = bitRead(XdrvMailbox.index, i);
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: Pcf8574.max_devices %d requested pin %d"), Pcf8574.max_devices,Pcf8574.pin[i]);
if (Pcf8574.max_devices > 0 && Pcf8574.pin[i] < 99) {
uint8_t board = Pcf8574.pin[i]>>3;
uint8_t pin = Pcf8574.pin[i]&0x7;
uint8_t oldpinmask = Pcf8574.pin_mask[board];
uint8_t _val = bitRead(TasmotaGlobal.rel_inverted, i) ? !relay_state : relay_state;
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: Pcf8574SwitchRelay %d on pin %d"), i,state);
if (_val) {
Pcf8574.pin_mask[board] |= _val << (Pcf8574.pin[i]&0x7);
} else {
Pcf8574.pin_mask[board] &= ~(1 << (Pcf8574.pin[i]&0x7));
}
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: SwitchRelay %d=%d => PCF-%d.D%d=%d"), i, relay_state, board +1, pin, _val);
bitWrite(Pcf8574.pin_mask[board], pin, _val);
if (oldpinmask != Pcf8574.pin_mask[board]) {
Wire.beginTransmission(Pcf8574.address[board]);
Wire.write(Pcf8574.pin_mask[board]);
Pcf8574.error = Wire.endTransmission();
Pcf8574.error = Pcf8574Write(board);
}
//pcf8574.write(Pcf8574.pin[i]&0x7, TasmotaGlobal.rel_inverted[i] ? !state : state);
//else AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: SwitchRelay skipped"));
}
}
}
@ -114,20 +122,32 @@ void Pcf8574Init(void)
TasmotaGlobal.devices_present = TasmotaGlobal.devices_present - Pcf8574.max_connected_ports; // reset no of devices to avoid duplicate ports on duplicate init.
Pcf8574.max_connected_ports = 0; // reset no of devices to avoid duplicate ports on duplicate init.
for (uint32_t idx = 0; idx < Pcf8574.max_devices; idx++) { // suport up to 8 boards PCF8574
uint8_t gpio = Pcf8574Read(idx);
Pcf8574.pin_mask[idx] = gpio;
#ifdef USE_PCF8574_MQTTINPUT
Pcf8574.last_input[idx] = gpio & ~Settings.pcf8574_config[idx];
#endif // #ifdef USE_PCF8574_MQTTINPUT
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: PCF-%d config=0x%02x, gpio=0x%02X"), idx +1, Settings.pcf8574_config[idx], gpio);
AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: Device %d config 0x%02x"), idx +1, Settings.pcf8574_config[idx]);
for (uint32_t i = 0; i < 8; i++) {
for (uint32_t i = 0; i < 8; i++, gpio>>=1) {
uint8_t _result = Settings.pcf8574_config[idx] >> i &1;
//AddLog_P(LOG_LEVEL_DEBUG, PSTR("PCF: I2C shift i %d: %d. Powerstate: %d, TasmotaGlobal.devices_present: %d"), i,_result, Settings.power>>i&1, TasmotaGlobal.devices_present);
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: I2C shift i %d: %d. Powerstate: %d, TasmotaGlobal.devices_present: %d"), i,_result, Settings.power>>i&1, TasmotaGlobal.devices_present);
if (_result > 0) {
Pcf8574.pin[TasmotaGlobal.devices_present] = i + 8 * idx;
bitWrite(TasmotaGlobal.rel_inverted, TasmotaGlobal.devices_present, Settings.flag3.pcf8574_ports_inverted); // SetOption81 - Invert all ports on PCF8574 devices
if (!Settings.flag.save_state && !Settings.flag3.no_power_feedback) { // SetOption63 - Don't scan relay power state at restart - #5594 and #5663
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: Set power from from chip state"));
uint8_t power_state = Settings.flag3.pcf8574_ports_inverted ? 1 & ~gpio : 1 & gpio;
bitWrite(TasmotaGlobal.power, TasmotaGlobal.devices_present, power_state);
bitWrite(Settings.power, TasmotaGlobal.devices_present, power_state);
}
//else AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: DON'T set power from chip state"));
TasmotaGlobal.devices_present++;
Pcf8574.max_connected_ports++;
}
}
}
//AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: Settings.power=0x%08X, TasmotaGlobal.power=0x%08X"), Settings.power, TasmotaGlobal.power);
AddLog(LOG_LEVEL_INFO, PSTR("PCF: Total devices %d, PCF8574 output ports %d"), Pcf8574.max_devices, Pcf8574.max_connected_ports);
}
}
@ -154,6 +174,9 @@ const char HTTP_FORM_I2C_PCF8574_2[] PROGMEM =
"<option%s value='1'>" D_DEVICE_OUTPUT "</option>"
"</select></td></tr>";
const char HTTP_SNS_PCF8574_GPIO[] PROGMEM = "{s}PCF8574%c%d D%d{m}%d{e}"; // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
void HandlePcf8574(void)
{
if (!HttpCheckPriviledgedAccess()) { return; }
@ -188,6 +211,63 @@ void HandlePcf8574(void)
WSContentStop();
}
#if defined(USE_PCF8574_SENSOR) || defined(USE_PCF8574_DISPLAYINPUT)
void Pcf8574Show(bool json)
{
#ifdef USE_PCF8574_SENSOR
if (json) {
for (int idx = 0 ; idx < Pcf8574.max_devices ; idx++)
{
uint8_t gpio = Pcf8574Read(idx);
ResponseAppend_P(PSTR(",\"PCF8574%c%d\":{\"D0\":%i,\"D1\":%i,\"D2\":%i,\"D3\":%i,\"D4\":%i,\"D5\":%i,\"D6\":%i,\"D7\":%i"),
IndexSeparator(), idx +1,
(gpio>>0)&1,(gpio>>1)&1,(gpio>>2)&1,(gpio>>3)&1,(gpio>>4)&1,(gpio>>5)&1,(gpio>>6)&1,(gpio>>7)&1);
}
ResponseJsonEnd();
}
#endif // #ifdef USE_PCF8574_SENSOR
#if defined(USE_WEBSERVER) && defined(USE_PCF8574_DISPLAYINPUT)
if(!json) {
for (int idx = 0 ; idx < Pcf8574.max_devices ; idx++)
{
uint8_t input_mask = ~Settings.pcf8574_config[idx]; //invert to 1 = input
uint8_t gpio = Pcf8574Read(idx);
for (int pin = 0 ; pin < 8 ; ++pin, input_mask>>=1, gpio>>=1)
{
if (input_mask & 1)
WSContentSend_P(HTTP_SNS_PCF8574_GPIO, IndexSeparator(), idx +1, pin, gpio & 1);
}
}
}
#endif // defined(USE_WEBSERVER) && defined(USE_PCF8574_DISPLAYINPUT)
}
#endif // #if defined(USE_PCF8574_SENSOR) || defined(USE_PCF8574_DISPLAYINPUT)
#ifdef USE_PCF8574_MQTTINPUT
void Pcf8574CheckForInputChange(void)
{
for (int idx = 0 ; idx < Pcf8574.max_devices ; idx++)
{
uint8_t input_mask = ~Settings.pcf8574_config[idx]; //invert to 1 = input
uint8_t input = Pcf8574Read(idx) & input_mask;
uint8_t last_input = Pcf8574.last_input[idx];
if (input != last_input) { // don't scan bits if no change (EVERY_50_MS !)
for (uint8_t pin = 0 ; pin < 8 ; ++pin) {
if (bitRead(input_mask,pin) && bitRead(input,pin) != bitRead(last_input,pin)) {
ResponseTime_P(PSTR(",\"PCF8574%c%d_INP\":{\"D%i\":%i}}"), IndexSeparator(), idx +1, pin, bitRead(input,pin));
MqttPublishPrefixTopicRulesProcess_P(RESULT_OR_STAT, PSTR("PCF8574_INP"));
if (Settings.flag3.hass_tele_on_power) { // SetOption59 - Send tele/%topic%/SENSOR in addition to stat/%topic%/RESULT
MqttPublishSensor();
}
}
Pcf8574.last_input[idx] = input;
}
}
}
}
#endif //#ifdef USE_PCF8574_MQTTINPUT
void Pcf8574SaveSettings(void)
{
char stemp[7];
@ -243,6 +323,16 @@ bool Xdrv28(uint8_t function)
case FUNC_SET_POWER:
Pcf8574SwitchRelay();
break;
#ifdef USE_PCF8574_MQTTINPUT
case FUNC_EVERY_50_MSECOND:
Pcf8574CheckForInputChange();
break;
#endif // #ifdef USE_PCF8574_MQTTINPUT
#ifdef USE_PCF8574_SENSOR
case FUNC_JSON_APPEND:
Pcf8574Show(1);
break;
#endif // #ifdef USE_PCF8574_SENSOR
#ifdef USE_WEBSERVER
case FUNC_WEB_ADD_BUTTON:
WSContentSend_P(HTTP_BTN_MENU_PCF8574);
@ -250,6 +340,11 @@ bool Xdrv28(uint8_t function)
case FUNC_WEB_ADD_HANDLER:
WebServer_on(PSTR("/" WEB_HANDLE_PCF8574), HandlePcf8574);
break;
#ifdef USE_PCF8574_DISPLAYINPUT
case FUNC_WEB_SENSOR:
Pcf8574Show(0);
break;
#endif // #ifdef USE_PCF8574_DISPLAYINPUT
#endif // USE_WEBSERVER
}
}