Diff: EERAM.cpp

Revision:

2:bdbf9de0e985

Parent:

1:6028bc22d82f

Child:

3:a869096d7a5d

diff -r 6028bc22d82f -r bdbf9de0e985 EERAM.cpp
--- a/EERAM.cpp	Tue Apr 25 16:22:53 2017 +0000
+++ b/EERAM.cpp	Thu Apr 27 13:25:23 2017 +0000
@@ -2,7 +2,7 @@
 * @file    EERAM.cpp
 * @brief   mbed driver for Microchip I2C EERAM devices (47x04 and 47x16)
 * @author  Mark Peter Vargha, vmp@varghamarkpeter.hu
-* @version 1.0.0
+* @version 1.1.0
 *
 * Copyright (c) 2017
 *
@@ -36,6 +36,14 @@
     _controlAddressRead ^= (-true ^ _controlAddressWrite) & (1 << RW_BIT);
 }
 
+void EERAM::putAddressIntoBuffer(uint16_t address, char *data)
+{
+    MemoryAddress location;
+    location.address = address;
+    data[0] = location.bytes[1];
+    data[1] = location.bytes[0];
+}
+
 bool EERAM::checkAddressRange(uint16_t start, uint16_t length)
 {
     return start < _memorySize && start + length <= _memorySize && length > 0;
@@ -56,6 +64,13 @@
     return success;
 }
 
+bool EERAM::write(char *data, int length)
+{
+    bool success = false;
+    success = _i2c.write(_sramAddressWrite, data, length) == 0;
+    return success;
+}
+
 bool EERAM::read(uint16_t address, char *data, int length)
 {
     bool success = checkAddressRange(address, length);
@@ -68,6 +83,17 @@
     return success;
 }
 
+bool EERAM::read(char *data, int length)
+{
+    bool success = setMemoryPointer((uint8_t)data[1], (uint8_t)data[0], true);
+    if (success)
+    {
+        success = _i2c.read(_sramAddressRead, data + 2, length - 2, false) == 0;
+    }
+    _i2c.stop();
+    return success;
+}
+
 bool EERAM::writeRegister(uint8_t registerAddress, uint8_t data)
 {
     _i2c.start();
@@ -227,13 +253,18 @@
 
 bool EERAM::setMemoryPointer(uint16_t address, bool stop)
 {
-    int result = 0;
     MemoryAddress location;
     location.address = address;
+    return setMemoryPointer(location.bytes[0], location.bytes[1], stop);
+}
+
+bool EERAM::setMemoryPointer(uint8_t address_0, uint8_t address_1, bool stop)
+{
+    int result = 0;
     _i2c.start();
     result = _i2c.write(_sramAddressWrite);
-    if (result == 1) result = _i2c.write(location.bytes[1]);
-    if (result == 1) result = _i2c.write(location.bytes[0]);
+    if (result == 1) result = _i2c.write(address_1);
+    if (result == 1) result = _i2c.write(address_0);
     if (stop) _i2c.stop();
     return result == 1;
 }
@@ -259,7 +290,7 @@
 
 void EERAM::dumpRegisters(Serial &serial)
 {
-    serial.printf("Control Register Contents\r\n");
+    serial.printf("Status Register Contents\r\n");
     serial.printf("Event detected: %d\r\n", isEventDetected());
     serial.printf("Auto Store Enabled: %d\r\n", isAutoStoreEnabled());
     serial.printf("Protected area: %d = ", getProtectedMemoryArea());