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

tags/v0.6.3
wolfv6 7 years ago
parent
6dde737d23
commit
3fa0aee2e2
2 changed files with 9 additions and 5 deletions
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  1. 6
    2
      src/Row.h
  2. 3
    3
      src/Scanner_ShiftRegsPISOMultiRow.cpp

+ 6
- 2
src/Row.h View File

@@ -11,8 +11,12 @@
/*
strobePin has one of two formats:
* if refScanner a Scanner_uC, then strobePin is an Arduino pin number connected to this row
* otherwise strobePin is bit pattern, 1 indicating an IC pin connected to this row
1. if strobe pin is on uC (Scanner_uC or Scanner_ShiftRegsPISOMultiRow),
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
{

+ 3
- 3
src/Scanner_ShiftRegsPISOMultiRow.cpp View File

@@ -21,7 +21,7 @@ Initializes shift register's shift/load pin.
*/
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.
@@ -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

//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

@@ -46,7 +46,7 @@ read_pins_t Scanner_ShiftRegsPISOMultiRow::scan(const uint8_t strobePin)

SPI.transfer(&readState, byte_count);

//SPI.endTransaction();
SPI.endTransaction();

return readState;
}