Tasmota/tasmota/xlgt_04_sm2135.ino

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/*
xlgt_04_sm2135.ino - sm2135 five channel led support for Tasmota
2019-12-31 13:23:34 +00:00
Copyright (C) 2020 Theo Arends
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_LIGHT
#ifdef USE_SM2135
/*********************************************************************************************\
* SM2135 RGBCW Led bulbs like some Action LSC SmartLed
*
* {"NAME":"LSC RGBCW LED","GPIO":[0,0,0,0,0,0,0,0,181,0,180,0,0],"FLAG":0,"BASE":18}
\*********************************************************************************************/
#define XLGT_04 4
#define SM2135_ADDR_MC 0xC0 // Max current register
#define SM2135_ADDR_CH 0xC1 // RGB or CW channel select register
#define SM2135_ADDR_R 0xC2 // Red color
#define SM2135_ADDR_G 0xC3 // Green color
#define SM2135_ADDR_B 0xC4 // Blue color
#define SM2135_ADDR_C 0xC5 // Cold
#define SM2135_ADDR_W 0xC6 // Warm
#define SM2135_RGB 0x00 // RGB channel
#define SM2135_CW 0x80 // CW channel (Chip default)
#define SM2135_10MA 0x00
#define SM2135_15MA 0x01
#define SM2135_20MA 0x02 // RGB max current (Chip default)
#define SM2135_25MA 0x03
#define SM2135_30MA 0x04 // CW max current (Chip default)
#define SM2135_35MA 0x05
#define SM2135_40MA 0x06
#define SM2135_45MA 0x07 // Max value for RGB
#define SM2135_50MA 0x08
#define SM2135_55MA 0x09
#define SM2135_60MA 0x0A
// RGB current CW current
const uint8_t SM2135_CURRENT = (SM2135_20MA << 4) | SM2135_15MA; // See https://github.com/arendst/Tasmota/issues/6495#issuecomment-549121683
struct SM2135 {
uint8_t clk = 0;
uint8_t data = 0;
} Sm2135;
uint8_t Sm2135Write(uint8_t data)
{
for (uint32_t i = 0; i < 8; i++) {
digitalWrite(Sm2135.clk, LOW);
digitalWrite(Sm2135.data, (data & 0x80));
digitalWrite(Sm2135.clk, HIGH);
data = data << 1;
}
digitalWrite(Sm2135.clk, LOW);
digitalWrite(Sm2135.data, HIGH);
pinMode(Sm2135.data, INPUT);
digitalWrite(Sm2135.clk, HIGH);
uint8_t ack = digitalRead(Sm2135.data);
pinMode(Sm2135.data, OUTPUT);
return ack;
}
void Sm2135Send(uint8_t *buffer, uint8_t size)
{
digitalWrite(Sm2135.data, LOW);
for (uint32_t i = 0; i < size; i++) {
Sm2135Write(buffer[i]);
}
digitalWrite(Sm2135.clk, LOW);
digitalWrite(Sm2135.clk, HIGH);
digitalWrite(Sm2135.data, HIGH);
}
/********************************************************************************************/
bool Sm2135SetChannels(void)
{
uint8_t *cur_col = (uint8_t*)XdrvMailbox.data;
uint8_t data[6];
if ((0 == cur_col[0]) && (0 == cur_col[1]) && (0 == cur_col[2])) {
// No color so must be Cold/Warm
/*
if ((cur_col[3] + cur_col[4]) >= (1 * 256)) {
// Scale down to 255 total to fix max power usage of 9W (=40mA)
// cur_col[3] >>= 1; // Divide by 2
// cur_col[4] >>= 1; // Divide by 2
}
*/
data[0] = SM2135_ADDR_MC;
data[1] = SM2135_CURRENT;
data[2] = SM2135_CW;
Sm2135Send(data, 3);
delay(1);
data[0] = SM2135_ADDR_C;
data[1] = cur_col[4]; // Warm
data[2] = cur_col[3]; // Cold
Sm2135Send(data, 3);
} else {
// Color
/*
if ((cur_col[0] + cur_col[1] + cur_col[2]) >= (3 * 256)) {
// Scale down to 765 total to fix max power usage of 9W
// Currently not needed with setting 3 x 15mA = 45mA = 11W = 765
}
*/
data[0] = SM2135_ADDR_MC;
data[1] = SM2135_CURRENT;
data[2] = SM2135_RGB;
data[3] = cur_col[1]; // Green
data[4] = cur_col[0]; // Red
data[5] = cur_col[2]; // Blue
Sm2135Send(data, 6);
}
return true;
}
void Sm2135ModuleSelected(void)
{
if ((pin[GPIO_SM2135_CLK] < 99) && (pin[GPIO_SM2135_DAT] < 99)) {
Sm2135.clk = pin[GPIO_SM2135_CLK];
Sm2135.data = pin[GPIO_SM2135_DAT];
pinMode(Sm2135.data, OUTPUT);
digitalWrite(Sm2135.data, HIGH);
pinMode(Sm2135.clk, OUTPUT);
digitalWrite(Sm2135.clk, HIGH);
light_type = LT_RGBWC;
light_flg = XLGT_04;
AddLog_P2(LOG_LEVEL_DEBUG, PSTR("DBG: SM2135 Found"));
}
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xlgt04(uint8_t function)
{
bool result = false;
switch (function) {
case FUNC_SET_CHANNELS:
result = Sm2135SetChannels();
break;
case FUNC_MODULE_INIT:
Sm2135ModuleSelected();
break;
}
return result;
}
#endif // USE_SM2135
#endif // USE_LIGHT