Skip to content

Psoc ino shift #122

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ramya-subramanyam merged 1 commit into from
Jun 2, 2025
Merged

Psoc ino shift #122

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
40 changes: 40 additions & 0 deletions cores/psoc6/Shift.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,40 @@
#include "Arduino.h"

uint8_t shiftIn(pin_size_t ulDataPin, pin_size_t ulClockPin, BitOrder ulBitOrder) {
uint8_t value = 0;

cyhal_gpio_t data_pin = mapping_gpio_pin[ulDataPin];
cyhal_gpio_t clock_pin = mapping_gpio_pin[ulClockPin];

for (uint8_t i = 0 ; i < 8 ; ++i)
{
cyhal_gpio_write(clock_pin, HIGH);

if (ulBitOrder == LSBFIRST) {
value |= cyhal_gpio_read(data_pin) << i;
} else {
value |= cyhal_gpio_read(data_pin) << (7 - i);
}

cyhal_gpio_write(clock_pin, LOW);
}

return value;
}

void shiftOut(pin_size_t ulDataPin, pin_size_t ulClockPin, BitOrder ulBitOrder, uint8_t ulVal) {
cyhal_gpio_t data_pin = mapping_gpio_pin[ulDataPin];
cyhal_gpio_t clock_pin = mapping_gpio_pin[ulClockPin];

for (uint8_t i = 0 ; i < 8 ; i++)
{
if (ulBitOrder == LSBFIRST) {
cyhal_gpio_write(data_pin, !!(ulVal & (1 << i)));
} else {
cyhal_gpio_write(data_pin, !!(ulVal & (1 << (7 - i))));
}

cyhal_gpio_write(clock_pin, HIGH);
cyhal_gpio_write(clock_pin, LOW);
}
}
Loading