From 0adb6c825ea194c455a377d0570c596d933f317e Mon Sep 17 00:00:00 2001 From: Sadeep Madurange Date: Sun, 17 Nov 2024 13:56:46 +0800 Subject: RF tests. --- rf_test/send.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 rf_test/send.c (limited to 'rf_test/send.c') diff --git a/rf_test/send.c b/rf_test/send.c new file mode 100644 index 0000000..017d67b --- /dev/null +++ b/rf_test/send.c @@ -0,0 +1,77 @@ +#include +#include +#include +#include + +#define LOCK_BTN PD6 +#define UNLOCK_BTN PD7 + +#define SYN 0xA4 +#define ADDR 0x01 +#define LOCK_CMD 0x02 +#define UNLOCK_CMD 0x03 + +static void usart_init(void) +{ + UBRR0H = UBRRH_VALUE; + UBRR0L = UBRRL_VALUE; +#if USE_2X + UCSR0A |= (1 << U2X0); +#else + UCSR0A &= ~(1 << U2X0); +#endif + UCSR0B = (1 << TXEN0) | (1 << RXEN0); + UCSR0C = (1 << UCSZ01) | (1 << UCSZ00); +} + +static void usart_send(unsigned char data) +{ + while (!(UCSR0A & (1 << UDRE0))) + ; + UDR0 = data; +} + +int main(void) +{ + usart_init(); + + for (;;) + ; + + return 0; +} + +static inline int is_btn_pressed(unsigned char btn) +{ + if (!((PIND >> btn) & 0x01)) { + _delay_us(2000); + return !((PIND >> btn) & 0x01); + } + + return 0; +} + +static inline void lock(void) +{ + usart_send(SYN); + usart_send(ADDR); + usart_send(LOCK_CMD); + usart_send(LOCK_CMD + ADDR); +} + +static inline void unlock(void) +{ + usart_send(SYN); + usart_send(ADDR); + usart_send(UNLOCK_CMD); + usart_send(UNLOCK_CMD + ADDR); +} + +ISR(PCINT2_vect) +{ + if (is_btn_pressed(LOCK_BTN)) + lock(); + + if (is_btn_pressed(UNLOCK_BTN)) + unlock(); +} -- cgit v1.2.3