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add tri-state and right 74HC165 to sr0_LED_shiftRegs.ino

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wolfv6 2016-10-31 17:43:53 -06:00
parent 6dde737d23
commit 3fa0aee2e2
2 changed files with 9 additions and 5 deletions
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8
src/Row.h
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@ -11,8 +11,12 @@
/* /*
strobePin has one of two formats: strobePin has one of two formats:
* if refScanner a Scanner_uC, then strobePin is an Arduino pin number connected to this row 1. if strobe pin is on uC (Scanner_uC or Scanner_ShiftRegsPISOMultiRow),
* otherwise strobePin is bit pattern, 1 indicating an IC pin connected to this row then strobePin is an Arduino pin number connected to this row.
2. if strobe pin is on I/O expander (Scanner_IOE), then strobePin is bit pattern,
1 indicating the I/O expander pin connected to this row
todo instantiation examples - here or in Scanner?
*/ */
class Row class Row
{ {

6
src/Scanner_ShiftRegsPISOMultiRow.cpp
View File

@ -21,7 +21,7 @@ Initializes shift register's shift/load pin.
*/ */
void Scanner_ShiftRegsPISOMultiRow::begin() void Scanner_ShiftRegsPISOMultiRow::begin()
{ {
SPI.begin(); SPI.begin(); //todo move this to constructor or init()
} }
/* scan() strobes the row's strobePin and returns state of the shift register's input pins. /* scan() strobes the row's strobePin and returns state of the shift register's input pins.
@ -32,7 +32,7 @@ read_pins_t Scanner_ShiftRegsPISOMultiRow::scan(const uint8_t strobePin)
{ {
read_pins_t readState = 0; //bits, 1 means key is pressed, 0 means released read_pins_t readState = 0; //bits, 1 means key is pressed, 0 means released
//SPI.beginTransaction( SPISettings(5000000, MSBFIRST, SPI_MODE0) ); //control SPI bus, 5 MHz SPI.beginTransaction( SPISettings(5000000, MSBFIRST, SPI_MODE0) ); //control SPI bus, 5 MHz
digitalWrite(slaveSelect, LOW); //load parallel inputs to registers digitalWrite(slaveSelect, LOW); //load parallel inputs to registers
@ -46,7 +46,7 @@ read_pins_t Scanner_ShiftRegsPISOMultiRow::scan(const uint8_t strobePin)
SPI.transfer(&readState, byte_count); SPI.transfer(&readState, byte_count);
//SPI.endTransaction(); SPI.endTransaction();
return readState; return readState;
} }