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Fix PCF8574 and MCP230xx address confict

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Fix PCF8574 and MCP230xx address confict (#8010)
This commit is contained in:
Theo Arends 2020-03-27 16:34:00 +01:00
parent 6f8026e394
commit 3bf1410563
1 changed files with 10 additions and 6 deletions
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16
tasmota/xdrv_28_pcf8574.ino
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@ -77,6 +77,16 @@ void Pcf8574Init(void)
uint8_t pcf8574_address = PCF8574_ADDR1;
while ((Pcf8574.max_devices < MAX_PCF8574) && (pcf8574_address < PCF8574_ADDR2 +8)) {
#ifdef USE_MCP230xx_ADDR
if (USE_MCP230xx_ADDR == pcf8574_address) {
AddLog_P2(LOG_LEVEL_INFO, PSTR("PCF: Address 0x%02x reserved for MCP320xx skipped"), pcf8574_address);
pcf8574_address++;
if ((PCF8574_ADDR1 +7) == pcf8574_address) { // Support I2C addresses 0x20 to 0x26 and 0x39 to 0x3F
pcf8574_address = PCF8574_ADDR2 +1;
}
}
#endif
// AddLog_P2(LOG_LEVEL_DEBUG, PSTR("PCF: Probing addr: 0x%x for PCF8574"), pcf8574_address);
if (I2cSetDevice(pcf8574_address)) {
@ -93,12 +103,6 @@ void Pcf8574Init(void)
}
pcf8574_address++;
#ifdef USE_MCP230xx_ADDR
if (USE_MCP230xx_ADDR == pcf8574_address) {
AddLog_P2(LOG_LEVEL_INFO, PSTR("PCF: Addr: 0x%x reserved for MCP320xx, skipping PCF8574 probe"), pcf8574_address);
pcf8574_address++;
}
#endif
if ((PCF8574_ADDR1 +7) == pcf8574_address) { // Support I2C addresses 0x20 to 0x26 and 0x39 to 0x3F
pcf8574_address = PCF8574_ADDR2 +1;
}