diff options
Diffstat (limited to 'software/hhd70dongle/hhd70.c')
| -rw-r--r-- | software/hhd70dongle/hhd70.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/software/hhd70dongle/hhd70.c b/software/hhd70dongle/hhd70.c index e8c973b..2461c29 100644 --- a/software/hhd70dongle/hhd70.c +++ b/software/hhd70dongle/hhd70.c @@ -33,6 +33,29 @@ #include "hhd70.h" +#define BIAS_VAL OCR1BL + +static void hhd70_bias_init(void) +{ + DDRB |= (1<<PB6); + TCCR1B = 0; + TCNT1 = 0; + OCR1B = 0; + TCCR1A = (1<<COM1B1) | (1<<WGM10); + TCCR1B = (1<<WGM12); +} + +static inline void hhd70_bias_on(void) +{ + TCCR1B = (TCCR1B & 0xF8) | (1<<CS10); +} + +static inline void hhd70_bias_off(void) +{ + TCCR1B = (TCCR1B & 0xF8); + TCNT1 = 0; +} + void hhd70_init(void) { //configure Direction of SS / PB0 , MOSI and SCLK as Output to drive CS of CC1101 @@ -42,6 +65,7 @@ void hhd70_init(void) // SPSR = (0<<SPI2X) // f_osc/4 // SPSR = (1<<SPI2X) // f_osc/2 // SPSR = (1<<SPI2X); (4MHz vs. 8MHz) + hhd70_bias_init(); } void hhd70_config_GDO0_OOK_output(bool output_mode) @@ -111,16 +135,19 @@ char hhd70_spi_read_byte(void) void hhd70_palna_txmode(void) { SPI_PORT |= (1<<TE); + hhd70_bias_on(); } void hhd70_palna_rxmode(void) { SPI_PORT &= ~(1<<TE); + hhd70_bias_off(); } void hhd70_palna_off(void) { SPI_PORT |= (1<<TE); + hhd70_bias_off(); } int8_t hhd70_rx_data_available(void) @@ -128,3 +155,24 @@ int8_t hhd70_rx_data_available(void) //check if GDO2 pin has been pulled low by c1101 return (SPI_PINB_REG & (1 << GDO2)) == 0; } + +void hhd70_bias_set(uint8_t val) +{ + BIAS_VAL = val; +} + +uint8_t hhd70_bias_get(void) +{ + return BIAS_VAL; +} + +void hhd70_bias_inc(void) +{ + BIAS_VAL = (BIAS_VAL < 253) ? BIAS_VAL + 2 : 255; +} + +void hhd70_bias_dec(void) +{ + BIAS_VAL = (BIAS_VAL > 2) ? BIAS_VAL - 2 : 0; +} + |