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setByte() function #18

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3159ee6
setByte() function for displaying an arbitrary shape on a 7-segment d…
wlmeng11 Jun 7, 2016
911689e
Improved documentation for setByte()
wlmeng11 Jun 7, 2016
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12 changes: 12 additions & 0 deletions src/LedControl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -189,6 +189,18 @@ void LedControl::setChar(int addr, int digit, char value, boolean dp) {
spiTransfer(addr, digit+1,v);
}

void LedControl::setByte(int addr, int digit, byte value, boolean dp) {
int offset;
byte index,v;

offset=addr*8;
v = value;
if(dp)
v|=B10000000;
status[offset+digit]=v;
spiTransfer(addr, digit+1,v);
}

void LedControl::spiTransfer(int addr, volatile byte opcode, volatile byte data) {
//Create an array with the data to shift out
int offset=addr*2;
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24 changes: 24 additions & 0 deletions src/LedControl.h
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Expand Up @@ -182,6 +182,30 @@ class LedControl {
* dp sets the decimal point.
*/
void setChar(int addr, int digit, char value, boolean dp);

/*
* Display a specified byte on a 7-Segment Display.
* Specify a byte in the format: B_______
* where the blanks are either 1's or 0's corresponding to the on-off state of each of the segments A-G.
*
* Diagram of the 7-segments:
* --A--
* | |
* F B
* | |
* --G--
* | |
* E C
* | |
* --D--
*
* Params:
* addr address of the display
* digit the position of the digit on the display (0..7)
* value the value to be displayed, with each bit corresponding to a segment A-G
* dp sets the decimal point.
*/
void setByte(int addr, int digit, byte value, boolean dp);
};

#endif //LedControl.h
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