mirror of https://github.com/arendst/Tasmota.git
250 lines
8.5 KiB
C++
250 lines
8.5 KiB
C++
/*
|
|
xdrv_28_pcf8574.ino - PCF8574 I2C support for Sonoff-Tasmota
|
|
|
|
Copyright (C) 2019 Stefan Bode
|
|
|
|
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_I2C
|
|
#ifdef USE_PCF8574
|
|
/*********************************************************************************************\
|
|
* PCF8574 - I2C IO Expander
|
|
*
|
|
* I2C Address: PCF8574 = 0x20 .. 0x27, PCF8574A = 0x38 .. 0x3F
|
|
\*********************************************************************************************/
|
|
|
|
#define XDRV_28 28
|
|
|
|
#define PCF8574_ADDR1 0x20 // PCF8574
|
|
#define PCF8574_ADDR2 0x38 // PCF8574A
|
|
|
|
struct PCF8574 {
|
|
int error;
|
|
uint8_t pin[64];
|
|
uint8_t address[MAX_PCF8574];
|
|
uint8_t pin_mask[MAX_PCF8574] = { 0 };
|
|
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 = true;
|
|
} Pcf8574;
|
|
|
|
void Pcf8574SwitchRelay(void)
|
|
{
|
|
for (uint32_t i = 0; i < devices_present; i++) {
|
|
uint8_t relay_state = bitRead(XdrvMailbox.index, i);
|
|
|
|
//AddLog_P2(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 oldpinmask = Pcf8574.pin_mask[board];
|
|
uint8_t _val = bitRead(rel_inverted, i) ? !relay_state : relay_state;
|
|
|
|
//AddLog_P2(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));
|
|
}
|
|
if (oldpinmask != Pcf8574.pin_mask[board]) {
|
|
Wire.beginTransmission(Pcf8574.address[board]);
|
|
Wire.write(Pcf8574.pin_mask[board]);
|
|
Pcf8574.error = Wire.endTransmission();
|
|
}
|
|
//pcf8574.write(Pcf8574.pin[i]&0x7, rel_inverted[i] ? !state : state);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Pcf8574Init()
|
|
{
|
|
Pcf8574.type = false;
|
|
|
|
uint8_t pcf8574_address = PCF8574_ADDR1;
|
|
for (uint32_t i = 0; i < MAX_PCF8574; i++) {
|
|
|
|
// AddLog_P2(LOG_LEVEL_DEBUG, PSTR("PCF: Probing addr: 0x%x for PCF8574"), pcf8574_address);
|
|
|
|
if (I2cDevice(pcf8574_address)) {
|
|
I2cSetActive(pcf8574_address);
|
|
Pcf8574.type = true;
|
|
|
|
Pcf8574.address[Pcf8574.max_devices] = pcf8574_address;
|
|
Pcf8574.max_devices++;
|
|
|
|
strcpy(Pcf8574.stype, "PCF8574");
|
|
if (pcf8574_address >= PCF8574_ADDR2) {
|
|
strcpy(Pcf8574.stype, "PCF8574A");
|
|
}
|
|
AddLog_P2(LOG_LEVEL_DEBUG, S_LOG_I2C_FOUND_AT, Pcf8574.stype, pcf8574_address);
|
|
}
|
|
pcf8574_address++;
|
|
if ((PCF8574_ADDR1 + 8) == pcf8574_address) {
|
|
pcf8574_address = PCF8574_ADDR2;
|
|
i=0;
|
|
}
|
|
}
|
|
if (Pcf8574.max_devices) {
|
|
for (uint32_t i = 0; i < sizeof(Pcf8574.pin); i++) {
|
|
Pcf8574.pin[i] = 99;
|
|
}
|
|
devices_present = 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
|
|
|
|
AddLog_P2(LOG_LEVEL_DEBUG, PSTR("PCF: Device %d config 0x%02x"), idx +1, Settings.pcf8574_config[idx]);
|
|
|
|
for (uint32_t i = 0; i < 8; i++) {
|
|
uint8_t _result = Settings.pcf8574_config[idx] >> i &1;
|
|
//AddLog_P2(LOG_LEVEL_DEBUG, PSTR("PCF: I2C shift i %d: %d. Powerstate: %d, devices_present: %d"), i,_result, Settings.power>>i&1, devices_present);
|
|
if (_result > 0) {
|
|
Pcf8574.pin[devices_present] = i + 8 * idx;
|
|
bitWrite(rel_inverted, devices_present, Settings.flag3.pcf8574_ports_inverted);
|
|
devices_present++;
|
|
Pcf8574.max_connected_ports++;
|
|
}
|
|
}
|
|
}
|
|
AddLog_P2(LOG_LEVEL_INFO, PSTR("PCF: Total devices %d, PCF8574 output ports %d"), Pcf8574.max_devices, Pcf8574.max_connected_ports);
|
|
}
|
|
}
|
|
|
|
/*********************************************************************************************\
|
|
* Presentation
|
|
\*********************************************************************************************/
|
|
|
|
#ifdef USE_WEBSERVER
|
|
|
|
#define WEB_HANDLE_PCF8574 "pcf"
|
|
|
|
const char HTTP_BTN_MENU_PCF8574[] PROGMEM =
|
|
"<p><form action='" WEB_HANDLE_PCF8574 "' method='get'><button>" D_CONFIGURE_PCF8574 "</button></form></p>";
|
|
|
|
const char HTTP_FORM_I2C_PCF8574_1[] PROGMEM =
|
|
"<fieldset><legend><b> " D_PCF8574_PARAMETERS " </b></legend>"
|
|
"<form method='get' action='" WEB_HANDLE_PCF8574 "'>"
|
|
"<p><input id='b1' name='b1' type='checkbox'%s><b>" D_INVERT_PORTS "</b></p><hr/>";
|
|
|
|
const char HTTP_FORM_I2C_PCF8574_2[] PROGMEM =
|
|
"<tr><td><b>" D_DEVICE " %d " D_PORT " %d</b></td><td style='width:100px'><select id='i2cs%d' name='i2cs%d'>"
|
|
"<option%s value='0'>" D_DEVICE_INPUT "</option>"
|
|
"<option%s value='1'>" D_DEVICE_OUTPUT "</option>"
|
|
"</select></td></tr>";
|
|
|
|
void HandlePcf8574(void)
|
|
{
|
|
if (!HttpCheckPriviledgedAccess()) { return; }
|
|
|
|
AddLog_P(LOG_LEVEL_DEBUG, PSTR(D_LOG_HTTP D_CONFIGURE_PCF8574));
|
|
|
|
if (WebServer->hasArg("save")) {
|
|
Pcf8574SaveSettings();
|
|
WebRestart(1);
|
|
return;
|
|
}
|
|
|
|
WSContentStart_P(D_CONFIGURE_PCF8574);
|
|
WSContentSendStyle();
|
|
WSContentSend_P(HTTP_FORM_I2C_PCF8574_1, (Settings.flag3.pcf8574_ports_inverted) ? " checked" : "");
|
|
WSContentSend_P(HTTP_TABLE100);
|
|
for (uint32_t idx = 0; idx < Pcf8574.max_devices; idx++) {
|
|
for (uint32_t idx2 = 0; idx2 < 8; idx2++) { // 8 ports on PCF8574
|
|
uint8_t helper = 1 << idx2;
|
|
WSContentSend_P(HTTP_FORM_I2C_PCF8574_2,
|
|
idx +1, idx2,
|
|
idx2 + 8*idx,
|
|
idx2 + 8*idx,
|
|
((helper & Settings.pcf8574_config[idx]) >> idx2 == 0) ? " selected " : " ",
|
|
((helper & Settings.pcf8574_config[idx]) >> idx2 == 1) ? " selected " : " "
|
|
);
|
|
}
|
|
}
|
|
WSContentSend_P(PSTR("</table>"));
|
|
WSContentSend_P(HTTP_FORM_END);
|
|
WSContentSpaceButton(BUTTON_CONFIGURATION);
|
|
WSContentStop();
|
|
}
|
|
|
|
void Pcf8574SaveSettings()
|
|
{
|
|
char stemp[7];
|
|
char tmp[100];
|
|
|
|
//AddLog_P(LOG_LEVEL_DEBUG, PSTR("PCF: Start working on Save arguements: inverted:%d")), WebServer->hasArg("b1");
|
|
|
|
Settings.flag3.pcf8574_ports_inverted = WebServer->hasArg("b1");
|
|
for (byte idx = 0; idx < Pcf8574.max_devices; idx++) {
|
|
byte count=0;
|
|
byte n = Settings.pcf8574_config[idx];
|
|
while(n!=0) {
|
|
n = n&(n-1);
|
|
count++;
|
|
}
|
|
if (count <= devices_present) {
|
|
devices_present = devices_present - count;
|
|
}
|
|
for (byte i = 0; i < 8; i++) {
|
|
snprintf_P(stemp, sizeof(stemp), PSTR("i2cs%d"), i+8*idx);
|
|
WebGetArg(stemp, tmp, sizeof(tmp));
|
|
byte _value = (!strlen(tmp)) ? 0 : atoi(tmp);
|
|
if (_value) {
|
|
Settings.pcf8574_config[idx] = Settings.pcf8574_config[idx] | 1 << i;
|
|
devices_present++;
|
|
Pcf8574.max_connected_ports++;
|
|
} else {
|
|
Settings.pcf8574_config[idx] = Settings.pcf8574_config[idx] & ~(1 << i );
|
|
}
|
|
}
|
|
//Settings.pcf8574_config[0] = (!strlen(webServer->arg("i2cs0").c_str())) ? 0 : atoi(webServer->arg("i2cs0").c_str());
|
|
//AddLog_P2(LOG_LEVEL_INFO, PSTR("PCF: I2C Board: %d, Config: %2x")), idx, Settings.pcf8574_config[idx];
|
|
|
|
}
|
|
}
|
|
#endif // USE_WEBSERVER
|
|
|
|
/*********************************************************************************************\
|
|
* Interface
|
|
\*********************************************************************************************/
|
|
|
|
bool Xdrv28(uint8_t function)
|
|
{
|
|
bool result = false;
|
|
|
|
if (i2c_flg && Pcf8574.type) {
|
|
switch (function) {
|
|
case FUNC_SET_POWER:
|
|
Pcf8574SwitchRelay();
|
|
break;
|
|
#ifdef USE_WEBSERVER
|
|
case FUNC_WEB_ADD_BUTTON:
|
|
WSContentSend_P(HTTP_BTN_MENU_PCF8574);
|
|
break;
|
|
case FUNC_WEB_ADD_HANDLER:
|
|
WebServer->on("/" WEB_HANDLE_PCF8574, HandlePcf8574);
|
|
break;
|
|
#endif // USE_WEBSERVER
|
|
case FUNC_PRE_INIT:
|
|
Pcf8574Init();
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#endif // USE_PCF8574
|
|
#endif // USE_I2C
|