Mike Moore
This is an involuntary fork, created because the repository would not update mmSPI. SPI library used to communicate with an altera development board attached to four zigbee-header pins.
Dependents: Embedded_RTOS_Project
Fork of
mmSPI
by 
Mike Moore
Diff: mmSPI.cpp
- Revision:
- 22:7524dee5c753
- Parent:
- 21:e90dd0f8aaa1
- Child:
- 23:dbd89a56716d
--- a/mmSPI.cpp Tue Aug 20 14:02:56 2013 +0000
+++ b/mmSPI.cpp Tue Aug 20 14:13:32 2013 +0000
@@ -49,11 +49,33 @@
error("\n\r mmSPI::setSPIfrequency : FATAL SPI frequency set too low. \n\r");
fSPIquarterP = (1 / fSPIfreq) / 4; // figure quarter-cycle period.
}
+//----------------------------------------------//------------------------------
+ // obtain SPI send buffer pointer.
+ void mmSPI::setSendBuffer(char * pcSendBuffer)
+ {
+ pcSend = pcSendBuffer; // promote to object scope.
+ }
+//----------------------------------------------//------------------------------
+ // obtain SPI receive buffer pointer.
+ void mmSPI::setReceiveBuffer(char * pcReceiveBuffer)
+ {
+ pcReceive = pcReceiveBuffer; // promote to object scope.
+ }
//----------------------------------------------//------------------------------
+ // obtain number of SPI bytes.
+ void mmSPI::setNumberOfBytes(int dNumberOfBytes)
+ {
+ dNumBytes = dNumberOfBytes; // promote to object scope.
+ }
+//----------------------------------------------//------------------------------
+
+
+
+
// transceive a character array.
// limit is 256 characters.
// MSB out/in first.
- void mmSPI::transceive_vector2(char *pcReceive, char *pcSend, int dNumBytes)
+ void mmSPI::transceive_vector(char *pcReceive, char *pcSend, int dNumBytes)
{
int dClear;
int dIndex;
@@ -118,7 +140,7 @@
pcSend[1] = ((cRegister & 0x07) << 2) | 0xA0;
pcSend[0] = cValue & 0xFF; // immediate value to i.w.
- transceive_vector2(pcReceive, pcSend, 8); // transmit command.
+ transceive_vector(pcReceive, pcSend, 8); // transmit command.
// clear transmit vector.
for (dLoop = 0; dLoop < 8; dLoop++) pcSend[dLoop] = 0x00;
@@ -134,7 +156,7 @@
// send all 0.
for (dLoop = 0; dLoop < 8; dLoop++) pcSend[dLoop] = 0x00;
- transceive_vector2(pcReceive, pcSend, 8); // snap & scan-out reg contents.
+ transceive_vector(pcReceive, pcSend, 8); // snap & scan-out reg contents.
return (pcReceive[6 - cRegister]); // return the particular reg value.
}
@@ -156,12 +178,12 @@
pcSend[7] = 0x00; // write-enable high.
pcSend[1] = 0x02;
pcSend[0] = 0x00;
- transceive_vector2(pcReceive, pcSend, 8);
+ transceive_vector(pcReceive, pcSend, 8);
pcSend[7] = 0x00; // write-enable low.
pcSend[1] = 0x00;
pcSend[0] = 0x00;
- transceive_vector2(pcReceive, pcSend, 8);
+ transceive_vector(pcReceive, pcSend, 8);
// clear transmit vector.
for (dLoop = 0; dLoop < 8; dLoop++) pcSend[dLoop] = 0x00;
@@ -186,12 +208,12 @@
pcSend[7] = 0x02; // mbed sends command.
pcSend[1] = 0xC8; // R2 <- MM[R3]
pcSend[0] = 0x00;
- transceive_vector2(pcReceive, pcSend, 8); // send command.
+ transceive_vector(pcReceive, pcSend, 8); // send command.
pcSend[7] = 0x02; // mbed sends command.
pcSend[1] = 0xC4; // R1 <- MM[R3]
pcSend[0] = 0x00;
- transceive_vector2(pcReceive, pcSend, 8); // send command.
+ transceive_vector(pcReceive, pcSend, 8); // send command.
// obtain MM content.
cHData = read_register(0x02, pcReceive, pcSend);