Diff: S2568FBLL.cpp

Revision:

0:0339901bb4b0

Child:

1:7d8adf80c30d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/S2568FBLL.cpp	Tue May 22 10:42:00 2018 +0000
@@ -0,0 +1,190 @@
+// S2568FBLL.cpp
+
+#include"S2568FBLL.h"
+
+// CONSTRUCTOR
+S2568FBLL::S2568FBLL(PinName mosi, PinName miso, PinName sclk, PinName cs,PinName hold) : SPI(mosi, miso, sclk), _cs(cs), _hold(hold)
+{
+    this->format(SPI_NBIT, SPI_MODE);
+    this->frequency(SPI_FREQ);
+    chipDisable();
+    holdEnable();       // Keep Hold High Always.... for read write operations.
+    // if you want to abort while transaction is happening use holdDiasable();
+    // Read Data Sheet Before Using Hold Disable
+    
+}
+// READING
+int S2568FBLL::readByte(int addr)
+{
+    writeRegister(RWMODE_BYTE);
+    chipEnable();
+    this->write(READ);
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+    int response = this->write(DUMMY_ADDR);
+    chipDisable();
+    return response;
+}
+
+void S2568FBLL::readStream(int addr, char* buf, int count)
+{
+    if (count < 1)
+        return;
+    writeRegister(RWMODE_SEQ);
+    chipEnable();
+    this->write(READ);
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+    for (int i = 0; i < count; i++) {
+        buf[i] =  this->write(DUMMY_ADDR);
+        printf("i= %d   :%c \r\n",i,buf[i]);
+    }
+    chipDisable();
+}
+
+// WRITING
+void S2568FBLL::writeByte(int addr, int data)
+{
+    writeRegister(RWMODE_BYTE);
+    chipEnable();
+    this->write(WRITE);
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+    this->write(data);
+    chipDisable();
+    // wait(WAIT_TIME);//instead of wait poll for WIP flag of status reg or use checkIfBusy() function...see main for more dtails 
+}
+
+void S2568FBLL::writeStream(int addr, char* buf, int count)
+{
+    if (count < 1)
+        return;
+    writeRegister(RWMODE_SEQ);
+    chipEnable();
+    this->write(WRITE);
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+    for (int i = 0; i < count; i++) {
+        this->write(buf[i]);
+    }
+    wait(0.1);
+    chipDisable();
+    wait(WAIT_TIME);
+}
+
+void S2568FBLL::writeString(int addr, string str)
+{
+    if (str.length() < 1)
+        return;
+    writeRegister(RWMODE_SEQ);
+    chipEnable();
+    this->write(WRITE);
+    this->write((addr & ADDR_BMASK3) >> ADDR_BSHIFT3);
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+    for (int i = 0; i < str.length(); i++)
+        this->write(str.at(i));
+    chipDisable();
+    wait(WAIT_TIME);//instead of wait poll for WIP flag of status reg or use checkIfBusy() function...see main for more dtails 
+}
+
+
+
+uint8_t S2568FBLL::readRegister(void)
+{
+    chipEnable();
+    this->write(RDMR);
+    uint8_t val=this->write(DUMMY_ADDR);
+    chipDisable();
+   //wait(WAIT_TIME);//instead of wait poll for WIP flag of status reg or use checkIfBusy() function...see main for more dtails 
+    //printf("value of reg is %X  \r\n",val);
+    return(val);
+
+}
+
+
+
+void S2568FBLL::writeRegister(uint8_t regValue)
+{
+   
+    chipEnable();
+    this->write(WRMR);
+    this->write(regValue);
+    chipDisable();
+  
+   // wait(WAIT_TIME);            //instead of wait poll for WIP flag of status reg or use checkIfBusy() function...see main for more dtails 
+}
+
+
+
+
+void S2568FBLL::writeLong(int addr, long value)
+{
+    //Decomposition from a long to 4 bytes by using bitshift.
+    //One = Most significant -> Four = Least significant byte
+    uint8_t four = (value & 0xFF);
+    uint8_t three = ((value >> 8) & 0xFF);
+    uint8_t two = ((value >> 16) & 0xFF);
+    uint8_t one = ((value >> 24) & 0xFF);
+
+    writeRegister(RWMODE_SEQ);
+    chipEnable();
+    this->write(WRITE);
+ 
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+    this->write(four);
+    this->write(three);
+    this->write(two);
+    this->write(one);
+    chipDisable();
+    wait(0.1);
+}
+
+long S2568FBLL::raedLong(int addr)
+{
+    //Read the 4 bytes from the eeprom memory.
+   writeRegister(RWMODE_SEQ);
+    chipEnable();
+    this->write(READ);
+    this->write((addr & ADDR_BMASK2) >> ADDR_BSHIFT2);
+    this->write((addr & ADDR_BMASK1) >> ADDR_BSHIFT1);
+    this->write((addr & ADDR_BMASK0) >> ADDR_BSHIFT0);
+
+    long four = this->write(DUMMY_ADDR);
+    long three = this->write(DUMMY_ADDR);
+    long two = this->write(DUMMY_ADDR);
+    long one = this->write(DUMMY_ADDR);
+
+    //Return the recomposed long by using bitshift.
+    return ((four << 0) & 0xFF) + ((three << 8) & 0xFFFF) + ((two << 16) & 0xFFFFFF) + ((one << 24) & 0xFFFFFFFF);
+    chipEnable();
+}
+
+
+//ENABLE/DISABLE (private functions)
+
+void S2568FBLL::chipEnable()
+{
+    _cs = 0;
+}
+void S2568FBLL::chipDisable()
+{
+    _cs = 1;
+}
+
+void S2568FBLL::holdEnable()
+{
+    _hold = 1;
+}
+
+void S2568FBLL::holdDisable()
+{
+    _hold = 0;
+}
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