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Allow extended I2C addresses to be specified in non-extended configuration

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If an extended I2C address is specified (including mux and/or subbus) then these parameters are ignored, but a warning output to the diagnostic console.
This commit is contained in:
Neil McKechnie 2023-02-18 09:32:38 +00:00
parent 9797a0fd2d
commit 173676287c
2 changed files with 26 additions and 4 deletions
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8
I2CManager.cpp
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@ -350,4 +350,10 @@ void I2CAddress::toHex(const uint8_t value, char *buffer) {
*ptr++ = bits > 9 ? bits-10+'a' : bits+'0';
bits = value & 0xf;
*ptr++ = bits > 9 ? bits-10+'a' : bits+'0';
}
}
#if !defined(I2C_EXTENDED_ADDRESS)
/* static */ bool I2CAddress::_addressWarningDone = false;
#endif

22
I2CManager.h
View File

@ -24,6 +24,7 @@
#include <inttypes.h>
#include "FSH.h"
#include "defines.h"
#include "DIAG.h"
/*
* Manager for I2C communications. For portability, it allows use
@ -144,9 +145,6 @@
//#define I2C_EXTENDED_ADDRESS
// Type to hold I2C address
#if defined(I2C_EXTENDED_ADDRESS)
/////////////////////////////////////////////////////////////////////////////////////
// Extended I2C Address type to facilitate extended I2C addresses including
// I2C multiplexer support.
@ -189,6 +187,9 @@ enum I2CSubBus : uint8_t {
SubBus_All = 255, // Enable all sub-buses
};
// Type to hold I2C address
#if defined(I2C_EXTENDED_ADDRESS)
// First MUX address (they range between 0x70-0x77).
#define I2C_MUX_BASE_ADDRESS 0x70
@ -315,6 +316,14 @@ public:
I2CAddress(const uint8_t deviceAddress) {
_deviceAddress = deviceAddress;
}
I2CAddress(I2CMux, I2CSubBus, const uint8_t deviceAddress) {
addressWarning();
_deviceAddress = deviceAddress;
}
I2CAddress(I2CSubBus, const uint8_t deviceAddress) {
addressWarning();
_deviceAddress = deviceAddress;
}
// Basic constructor
I2CAddress() : I2CAddress(0) {}
@ -344,6 +353,13 @@ public:
private:
// Helper function for converting byte to four-character hex string (e.g. 0x23).
void toHex(const uint8_t value, char *buffer);
void addressWarning() {
if (!_addressWarningDone) {
DIAG(F("WARNIING: Extended I2C address used but not supported in this configuration"));
_addressWarningDone = true;
}
}
static bool _addressWarningDone;
};
#endif // I2C_EXTENDED_ADDRESS