Robert Mosher
This class provides simplified I2C access to a Microchip 24LCxx Serial EEPROM device: - Rename the class (C2424 -> C24) - Add EraseMemoryArea method - Add DumpMemoryArea method only accessible in DEBUG mode - Add 'const' qualifier in parameters
Fork of
24LCxx_I2C
by 
Yann Garcia
Revision 5:2f61885d8bc3, committed 2018-09-13
- Comitter:
- acesrobertm
- Date:
- Thu Sep 13 09:56:13 2018 -0500
- Parent:
- 4:650f3259bd4f
- Commit message:
- away auto close feature added and enabled readers 2 and 3
Changed in this revision
| 24LCxx_I2C.cpp | Show annotated file Show diff for this revision Revisions of this file |
| 24LCxx_I2C.h | Show annotated file Show diff for this revision Revisions of this file |
diff -r 650f3259bd4f -r 2f61885d8bc3 24LCxx_I2C.cpp
--- a/24LCxx_I2C.cpp Wed Apr 25 09:37:34 2018 -0500
+++ b/24LCxx_I2C.cpp Thu Sep 13 09:56:13 2018 -0500
@@ -20,7 +20,7 @@
#include "24LCxx_I2C.h"
namespace _24LCXX_I2C {
- C24LCXX_I2C::C24LCXX_I2C(const PinName p_sda, const PinName p_scl, const unsigned char p_address, const unsigned int p_frequency) {
+ C24LCXX_I2C::C24LCXX_I2C(const PinName p_sda, const PinName p_scl, const uint8_t p_address, const uint32_t p_frequency) {
_i2cInstance = new I2C(p_sda, p_scl); //, "24LCxx_I2C"
_slaveAddress = (p_address << 1) | 0xa0; // Slave address format is: 1 0 1 0 A3 A2 A1 R/W
@@ -32,13 +32,13 @@
_i2cInstance = NULL;
}
- bool C24LCXX_I2C::Write(const short p_address, const unsigned char p_byte) {
+ bool C24LCXX_I2C::Write(const uint16_t p_address, const uint8_t p_byte) {
// 1.Prepare buffer
char i2cBuffer[3]; // Memory address + one byte of data
// 1.1. Memory address
- short address = p_address;
- i2cBuffer[0] = (unsigned char)(address >> 8);
- i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff);
+ uint16_t address = p_address;
+ i2cBuffer[0] = (uint8_t)(address >> 8);
+ i2cBuffer[1] = (uint8_t)((uint8_t)address & 0xff);
// 1.2. Datas
i2cBuffer[2] = p_byte;
@@ -49,20 +49,20 @@
return (bool)(result == 0);
}
- bool C24LCXX_I2C::Write(const short p_address, const short p_short, const C24LCXX_I2C::Mode p_mode) {
+ bool C24LCXX_I2C::Write(const uint16_t p_address, const uint16_t p_short, const C24LCXX_I2C::Mode p_mode) {
// 1.Prepare buffer
char i2cBuffer[4]; // Memory address + one short (2 bytes)
// 1.1. Memory address
- short address = p_address;
- i2cBuffer[0] = (unsigned char)(address >> 8);
- i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff);
+ uint16_t address = p_address;
+ i2cBuffer[0] = (uint8_t)(address >> 8);
+ i2cBuffer[1] = (uint8_t)((uint8_t)address & 0xff);
// 1.2. Datas
if (p_mode == BigEndian) {
- i2cBuffer[2] = (unsigned char)(p_short >> 8);
- i2cBuffer[3] = (unsigned char)((unsigned char)p_short & 0xff);
+ i2cBuffer[2] = (uint8_t)(p_short >> 8);
+ i2cBuffer[3] = (uint8_t)((uint8_t)p_short & 0xff);
} else {
- i2cBuffer[2] = (unsigned char)((unsigned char)p_short & 0xff);
- i2cBuffer[3] = (unsigned char)(p_short >> 8);
+ i2cBuffer[2] = (uint8_t)((uint8_t)p_short & 0xff);
+ i2cBuffer[3] = (uint8_t)(p_short >> 8);
}
// 2. Send I2C start + I2C address + Memory Address + Datas + I2C stop
@@ -72,24 +72,24 @@
return (bool)(result == 0);
}
- bool C24LCXX_I2C::Write(const short p_address, const int p_int, const C24LCXX_I2C::Mode p_mode) {
+ bool C24LCXX_I2C::Write(const uint16_t p_address, const uint32_t p_int, const C24LCXX_I2C::Mode p_mode) {
// 1.Prepare buffer
char i2cBuffer[6]; // Memory address + one integer (4 bytes)
// 1.1. Memory address
- short address = p_address;
- i2cBuffer[0] = (unsigned char)(address >> 8);
- i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff);
+ uint16_t address = p_address;
+ i2cBuffer[0] = (uint8_t)(address >> 8);
+ i2cBuffer[1] = (uint8_t)((uint8_t)address & 0xff);
// 1.2. Datas
if (p_mode == BigEndian) {
- i2cBuffer[2] = (unsigned char)(p_int >> 24);
- i2cBuffer[3] = (unsigned char)(p_int >> 16);
- i2cBuffer[4] = (unsigned char)(p_int >> 8);
- i2cBuffer[5] = (unsigned char)((unsigned char)p_int & 0xff);
+ i2cBuffer[2] = (uint8_t)(p_int >> 24);
+ i2cBuffer[3] = (uint8_t)(p_int >> 16);
+ i2cBuffer[4] = (uint8_t)(p_int >> 8);
+ i2cBuffer[5] = (uint8_t)((uint8_t)p_int & 0xff);
} else {
- i2cBuffer[2] = (unsigned char)((unsigned char)p_int & 0xff);
- i2cBuffer[3] = (unsigned char)(p_int >> 8);
- i2cBuffer[4] = (unsigned char)(p_int >> 16);
- i2cBuffer[5] = (unsigned char)(p_int >> 24);
+ i2cBuffer[2] = (uint8_t)((uint8_t)p_int & 0xff);
+ i2cBuffer[3] = (uint8_t)(p_int >> 8);
+ i2cBuffer[4] = (uint8_t)(p_int >> 16);
+ i2cBuffer[5] = (uint8_t)(p_int >> 24);
}
// 2. Send I2C start + I2C address + Memory Address + Datas + I2C stop
@@ -99,12 +99,12 @@
return (bool)(result == 0);
}
- bool C24LCXX_I2C::Read(const short p_address, unsigned char * p_byte) {
+ bool C24LCXX_I2C::Read(const uint16_t p_address, uint8_t * p_byte) {
// 1.Prepare buffer
char i2cBuffer[2];
// 1.1. Memory address
- i2cBuffer[0] = (unsigned char)(p_address >> 8);
- i2cBuffer[1] = (unsigned char)((unsigned char)p_address & 0xff);
+ i2cBuffer[0] = (uint8_t)(p_address >> 8);
+ i2cBuffer[1] = (uint8_t)((uint8_t)p_address & 0xff);
// 2. Send I2C start + memory address
if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) {
@@ -117,12 +117,12 @@
return false;
}
- bool C24LCXX_I2C::Read(const short p_address, short *p_short, const C24LCXX_I2C::Mode p_mode) {
+ bool C24LCXX_I2C::Read(const uint16_t p_address, uint16_t *p_short, const C24LCXX_I2C::Mode p_mode) {
// 1.Prepare buffer
char i2cBuffer[2];
// 1.1. Memory address
- i2cBuffer[0] = (unsigned char)(p_address >> 8);
- i2cBuffer[1] = (unsigned char)((unsigned char)p_address & 0xff);
+ i2cBuffer[0] = (uint8_t)(p_address >> 8);
+ i2cBuffer[1] = (uint8_t)((uint8_t)p_address & 0xff);
// 2. Send I2C start + memory address
if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) {
@@ -130,9 +130,9 @@
int result = _i2cInstance->read(_slaveAddress, i2cBuffer, 2);
if (result == 0) {
if (p_mode == BigEndian) {
- *p_short = (short)(i2cBuffer[0] << 8 | i2cBuffer[1]);
+ *p_short = (uint16_t)(i2cBuffer[0] << 8 | i2cBuffer[1]);
} else {
- *p_short = (short)(i2cBuffer[1] << 8 | i2cBuffer[0]);
+ *p_short = (uint16_t)(i2cBuffer[1] << 8 | i2cBuffer[0]);
}
return true;
@@ -142,12 +142,12 @@
return false;
}
- bool C24LCXX_I2C::Read(const short p_address, int *p_int, const C24LCXX_I2C::Mode p_mode) {
+ bool C24LCXX_I2C::Read(const uint16_t p_address, uint32_t *p_int, const C24LCXX_I2C::Mode p_mode) {
// 1.Prepare buffer
char i2cBuffer[4];
// 1.1. Memory address
- i2cBuffer[0] = (unsigned char)(p_address >> 8);
- i2cBuffer[1] = (unsigned char)((unsigned char)p_address & 0xff);
+ i2cBuffer[0] = (uint8_t)(p_address >> 8);
+ i2cBuffer[1] = (uint8_t)((uint8_t)p_address & 0xff);
// 2. Send I2C start + memory address
if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) {
diff -r 650f3259bd4f -r 2f61885d8bc3 24LCxx_I2C.h
--- a/24LCxx_I2C.h Wed Apr 25 09:37:34 2018 -0500
+++ b/24LCxx_I2C.h Thu Sep 13 09:56:13 2018 -0500
@@ -40,15 +40,15 @@
BigEndian //<! Little Endian mode: 0xA0B70708 is stored as AO: MSB and 08 LSB
};
public:
- C24LCXX_I2C(const PinName p_sda, const PinName p_scl, const unsigned char p_address, const unsigned int p_frequency = 400000);
+ C24LCXX_I2C(const PinName p_sda, const PinName p_scl, const unsigned char p_address, const uint32_t p_frequency = 400000);
virtual ~C24LCXX_I2C();
- bool Write(const short p_address, const unsigned char p_byte);
- bool Write(const short p_address, const short p_short, const C24LCXX_I2C::Mode p_mode = BigEndian);
- bool Write(const short p_address, const int p_int, const C24LCXX_I2C::Mode p_mode = BigEndian);
- bool Read(const short p_address, unsigned char *p_value);
- bool Read(const short p_address, short *p_short, C24LCXX_I2C::Mode p_mode = BigEndian);
- bool Read(const short p_address, int *p_int, C24LCXX_I2C::Mode p_mode = BigEndian);
+ bool Write(const uint16_t p_address, const uint8_t p_byte);
+ bool Write(const uint16_t p_address, const uint16_t p_short, const C24LCXX_I2C::Mode p_mode = BigEndian);
+ bool Write(const uint16_t p_address, const uint32_t p_int, const C24LCXX_I2C::Mode p_mode = BigEndian);
+ bool Read(const uint16_t p_address, unsigned char *p_value);
+ bool Read(const uint16_t p_address, uint16_t *p_short, C24LCXX_I2C::Mode p_mode = BigEndian);
+ bool Read(const uint16_t p_address, uint32_t *p_int, C24LCXX_I2C::Mode p_mode = BigEndian);
private:
}; // End of class C24LCXX_I2C