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Change default I2C address ranges

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* Change supported PCF8574 I2C address range to 0x20 - 0x26 allowing other I2C devices with address 0x27 to be used at the same time
 * Change supported PCF8574A I2C address range to 0x39 - 0x3F allowing other I2C devices with address 0x38 to be used at the same time
 * Change supported MCP230xx I2C address range to 0x20 - 0x26 allowing other I2C devices with address 0x27 to be used at the same time
This commit is contained in:
Theo Arends 2019-11-08 17:48:19 +01:00
parent be6c2cace8
commit 538d40ab72
7 changed files with 20 additions and 16 deletions
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8
I2CDEVICES.md
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@ -12,8 +12,8 @@ The following table lists the supported I2C devices
Index | Define | Driver | Device | Address(es) | Description
------|---------------------|---------|----------|-------------|-----------------------------------------------
1 | USE_PCA9685 | xdrv_15 | PCA9685 | 0x40 - 0x47 | 16-channel 12-bit pwm driver
2 | USE_PCF8574 | xdrv_28 | PCF8574 | 0x20 - 0x27 | 8-bit I/O expander
2 | USE_PCF8574 | xdrv_28 | PCF8574A | 0x38 - 0x3F | 8-bit I/O expander
2 | USE_PCF8574 | xdrv_28 | PCF8574 | 0x20 - 0x26 | 8-bit I/O expander
2 | USE_PCF8574 | xdrv_28 | PCF8574A | 0x39 - 0x3F | 8-bit I/O expander
3 | USE_DISPLAY_LCD | xdsp_01 | | 0x27, 0x3F | LCD display
4 | USE_DISPLAY_SSD1306 | xdsp_02 | SSD1306 | 0x3C - 0x3D | Oled display
5 | USE_DISPLAY_MATRIX | xdsp_03 | HT16K33 | 0x70 - 0x77 | 8x8 led matrix
@ -44,8 +44,8 @@ Index | Define | Driver | Device | Address(es) | Description
19 | USE_SI1145 | xsns_24 | SI1147 | 0x60 | Ultra violet index and light sensor
20 | USE_LM75AD | xsns_26 | LM75AD | 0x48 - 0x4F | Temperature sensor
21 | USE_APDS9960 | xsns_27 | APDS9960 | 0x39 | Proximity ambient light RGB and gesture sensor
22 | USE_MCP230xx | xsns_29 | MCP23008 | 0x20 - 0x27 | 16-bit I/O expander
22 | USE_MCP230xx | xsns_29 | MCP23017 | 0x20 - 0x27 | 16-bit I/O expander
22 | USE_MCP230xx | xsns_29 | MCP23008 | 0x20 - 0x26 | 16-bit I/O expander
22 | USE_MCP230xx | xsns_29 | MCP23017 | 0x20 - 0x26 | 16-bit I/O expander
23 | USE_MPR121 | xsns_30 | MPR121 | 0x5A - 0x5D | Proximity capacitive touch sensor
24 | USE_CCS811 | xsns_31 | CCS811 | 0x5A | Gas (TVOC) and air quality sensor
25 | USE_MPU6050 | xsns_32 | MPU6050 | 0x68 - 0x69 | 3-axis gyroscope and temperature sensor

2
RELEASENOTES.md
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@ -220,7 +220,7 @@ The following binary downloads have been compiled with ESP8266/Arduino library c
| USE_CHIRP | - | - | - | - | - | - | - |
| USE_PAJ7620 | - | - | - | - | - | - | - |
| USE_PCF8574 | - | - | - | - | - | - | - |
| USE_HIH6 | - | - | - | - | - | - | - |
| USE_HIH6 | - | - | - | - | x | - | - |
| | | | | | | | |
| Feature or Sensor | minimal | basic | tasmota | knx | sensors | ir | display | Remarks
| USE_SPI | - | - | - | - | - | - | x |

3
tasmota/_changelog.ino
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@ -1,6 +1,9 @@
/*********************************************************************************************\
* 7.0.0.4 20191108
* Add command WifiPower 0 .. 20.5 to set Wifi Output Power which will be default set to 17dB
* Change supported PCF8574 I2C address range to 0x20 - 0x26 allowing other I2C devices with address 0x27 to be used at the same time
* Change supported PCF8574A I2C address range to 0x39 - 0x3F allowing other I2C devices with address 0x38 to be used at the same time
* Change supported MCP230xx I2C address range to 0x20 - 0x26 allowing other I2C devices with address 0x27 to be used at the same time
*
* 7.0.0.3 20191103
* Initial support for I2C driver runtime control using command I2CDriver and document I2CDEVICES.md

4
tasmota/my_user_config.h
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@ -391,7 +391,7 @@
#define USE_LM75AD // Enable LM75AD sensor (I2C addresses 0x48 - 0x4F) (+0k5 code)
// #define USE_APDS9960 // Enable APDS9960 Proximity Sensor (I2C address 0x39). Disables SHT and VEML6070 (+4k7 code)
// #define USE_MCP230xx // Enable MCP23008/MCP23017 - Must define I2C Address in #define USE_MCP230xx_ADDR below - range 0x20 - 0x27 (+4k7 code)
// #define USE_MCP230xx_ADDR 0x20 // Enable MCP23008/MCP23017 I2C Address to use (Must be within range 0x20 through 0x27 - set according to your wired setup)
// #define USE_MCP230xx_ADDR 0x20 // Enable MCP23008/MCP23017 I2C Address to use (Must be within range 0x20 through 0x26 - set according to your wired setup)
// #define USE_MCP230xx_OUTPUT // Enable MCP23008/MCP23017 OUTPUT support through sensor29 commands (+1k5 code)
// #define USE_MCP230xx_DISPLAYOUTPUT // Enable MCP23008/MCP23017 to display state of OUTPUT pins on Web UI (+0k2 code)
// #define USE_PCA9685 // Enable PCA9685 I2C HW PWM Driver - Must define I2C Address in #define USE_PCA9685_ADDR below - range 0x40 - 0x47 (+1k4 code)
@ -412,7 +412,7 @@
// #define USE_MLX90614 // Enable MLX90614 ir temp sensor (I2C address 0x5a) (+0.6k code)
// #define USE_CHIRP // Enable CHIRP soil moisture sensor (variable I2C address, default 0x20)
// #define USE_PAJ7620 // Enable PAJ7620 gesture sensor (I2C address 0x73) (+2.5k code)
// #define USE_PCF8574 // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x27 and 0x38 - 0x3F) (+1k9 code)
// #define USE_PCF8574 // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x26 and 0x39 - 0x3F) (+1k9 code)
// #define USE_HIH6 // Enable Honeywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
// #define USE_DISPLAY // Add I2C Display Support (+2k code)

4
tasmota/tasmota_post.h
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@ -155,8 +155,8 @@ char* ToHex_P(const unsigned char * in, size_t insz, char * out, size_t outsz, c
//#define USE_MLX90614 // Enable MLX90614 ir temp sensor (I2C address 0x5a) (+0.6k code)
//#define USE_CHIRP // Enable CHIRP soil moisture sensor (variable I2C address, default 0x20)
//#define USE_PAJ7620 // Enable PAJ7620 gesture sensor (I2C address 0x73) (+2.5k code)
//#define USE_PCF8574 // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x27 and 0x38 - 0x3F) (+1k9 code)
//#define USE_HIH6 // Enable Honywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
//#define USE_PCF8574 // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x26 and 0x39 - 0x3F) (+1k9 code)
#define USE_HIH6 // Enable Honywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
#define USE_MHZ19 // Add support for MH-Z19 CO2 sensor (+2k code)
#define USE_SENSEAIR // Add support for SenseAir K30, K70 and S8 CO2 sensor (+2k3 code)

13
tasmota/xdrv_28_pcf8574.ino
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@ -22,7 +22,8 @@
/*********************************************************************************************\
* PCF8574 - I2C IO Expander
*
* I2C Address: PCF8574 = 0x20 .. 0x27, PCF8574A = 0x38 .. 0x3F
* I2C Address: PCF8574 = 0x20 .. 0x27 (0x27 is not supported),
* PCF8574A = 0x39 .. 0x3F (0x38 is not supported)
\*********************************************************************************************/
#define XDRV_28 28
@ -76,7 +77,7 @@ void Pcf8574Init()
Pcf8574.type = false;
uint8_t pcf8574_address = PCF8574_ADDR1;
for (uint32_t i = 0; i < MAX_PCF8574; i++) {
while ((Pcf8574.max_devices < MAX_PCF8574) && (pcf8574_address < PCF8574_ADDR2 +8)) {
// AddLog_P2(LOG_LEVEL_DEBUG, PSTR("PCF: Probing addr: 0x%x for PCF8574"), pcf8574_address);
@ -92,13 +93,13 @@ void Pcf8574Init()
}
AddLog_P2(LOG_LEVEL_INFO, 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_ADDR1 +7) == pcf8574_address) { // Support I2C addresses 0x20 to 0x26 and 0x39 to 0x3F
pcf8574_address = PCF8574_ADDR2 +1;
}
}
if (Pcf8574.max_devices) {
if (Pcf8574.type) {
for (uint32_t i = 0; i < sizeof(Pcf8574.pin); i++) {
Pcf8574.pin[i] = 99;
}

2
tasmota/xsns_29_mcp230xx.ino
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@ -25,7 +25,7 @@
Docs at https://www.microchip.com/wwwproducts/en/MCP23008
https://www.microchip.com/wwwproducts/en/MCP23017
I2C Address: 0x20 - 0x27
I2C Address: 0x20 - 0x26 (0x27 is not supported)
\*********************************************************************************************/
#define XSNS_29 29