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fix #55, redo #53 (#56)

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- fix #55 ==> redo fix #53
  - add test to detect **MBED** and **RP2040**
- adjust **I2C_BUFFERSIZE** for RP2040 to 128.
- update readme.md
This commit is contained in:
Rob Tillaart
2023-05-11 12:26:57 +02:00
committed by GitHub
parent c4400ea101
commit a13ec203ef
6 changed files with 37 additions and 16 deletions
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I2C_eeprom.cpp
+11 -10
View File
@@ -1,7 +1,7 @@
//
// FILE: I2C_eeprom.cpp
// AUTHOR: Rob Tillaart
// VERSION: 1.7.2
// VERSION: 1.7.3
// PURPOSE: Arduino Library for external I2C EEPROM 24LC256 et al.
// URL: https://github.com/RobTillaart/I2C_EEPROM.git
@@ -24,7 +24,7 @@
// I2C buffer needs max 2 bytes for EEPROM address
// 1 byte for EEPROM register address is available in transmit buffer
#if defined(ESP32) || defined(ESP8266)
#if defined(ESP32) || defined(ESP8266) || defined(PICO_RP2040)
#define I2C_BUFFERSIZE 128
#else
#define I2C_BUFFERSIZE 30 // AVR, STM
@@ -43,17 +43,18 @@ I2C_eeprom::I2C_eeprom(const uint8_t deviceAddress, TwoWire * wire) :
I2C_eeprom::I2C_eeprom(const uint8_t deviceAddress, const uint32_t deviceSize, TwoWire * wire)
{
_deviceAddress = deviceAddress;
_deviceSize = setDeviceSize(deviceSize);
_pageSize = getPageSize(_deviceSize);
_wire = wire;
_deviceAddress = deviceAddress;
_deviceSize = setDeviceSize(deviceSize);
_pageSize = getPageSize(_deviceSize);
_wire = wire;
// Chips 16 Kbit (2048 Bytes) or smaller only have one-word addresses.
this->_isAddressSizeTwoWords = deviceSize > I2C_DEVICESIZE_24LC16;
// Chips 16 Kbit (2048 Bytes) or smaller only have one-word addresses.
this->_isAddressSizeTwoWords = deviceSize > I2C_DEVICESIZE_24LC16;
}
#if defined(ESP8266) || defined(ESP32)
bool I2C_eeprom::begin(uint8_t sda, uint8_t scl)
{
// if (_wire == 0) Serial.println("zero"); // test #48
@@ -68,10 +69,9 @@ bool I2C_eeprom::begin(uint8_t sda, uint8_t scl)
_lastWrite = 0;
return isConnected();
}
#endif
#elif defined(ARDUINO_ARCH_RP2040) && !defined(__MBED__)
#if defined(PICO_RP2040)
bool I2C_eeprom::begin(uint8_t sda, uint8_t scl)
{
if ((sda < 255) && (scl < 255))
@@ -83,6 +83,7 @@ bool I2C_eeprom::begin(uint8_t sda, uint8_t scl)
_lastWrite = 0;
return isConnected();
}
#endif