diff options
Diffstat (limited to 'arch/attiny1634.h')
| -rw-r--r-- | arch/attiny1634.h | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/arch/attiny1634.h b/arch/attiny1634.h index fb89fa8..559d04e 100644 --- a/arch/attiny1634.h +++ b/arch/attiny1634.h @@ -13,20 +13,25 @@ #define BOGOMIPS (F_CPU/4000) #define DELAY_ZERO_TIME 1020 +inline void mcu_clock_speed(); + ///// clock dividers inline void clock_prescale_set(uint8_t n); +// TODO? allow hwdef to define a base clock speed, +// and adjust these values accordingly typedef enum { - clock_div_1 = 0, - clock_div_2 = 1, - clock_div_4 = 2, - clock_div_8 = 3, - clock_div_16 = 4, - clock_div_32 = 5, - clock_div_64 = 6, - clock_div_128 = 7, - clock_div_256 = 8 + // datasheet 6.5.2, CLKPR - Clock Prescale Register + clock_div_1 = 0, // 8 MHz + clock_div_2 = 1, // 4 MHz + clock_div_4 = 2, // 2 MHz + clock_div_8 = 3, // 1 MHz + clock_div_16 = 4, // 500 kHz + clock_div_32 = 5, // 250 kHz + clock_div_64 = 6, // 125 kHz + clock_div_128 = 7, // 62.5 kHz + clock_div_256 = 8, // 31.75 kHz } clock_div_t; @@ -39,11 +44,11 @@ typedef enum #define ADMUX_VCC 0b00001101 // (1 << V_REF) | (THERM_CHANNEL) // DS table 19-3, 19-4, internal sensor / 1.1V ref +// [refs1, refs0, refen, adc0en, mux3, mux2, mux1, mux0] +// refs=0b10 : internal 1.1V ref +// mux=0b1110 : internal temperature sensor #define ADMUX_THERM 0b10001110 - - - #define hwdef_set_admux_therm mcu_set_admux_therm inline void mcu_set_admux_therm(); @@ -54,8 +59,6 @@ inline void mcu_adc_sleep_mode(); inline void mcu_adc_start_measurement(); -inline void mcu_adc_on(); - inline void mcu_adc_off(); // NOP because interrupt flag clears itself @@ -63,6 +66,15 @@ inline void mcu_adc_off(); inline uint16_t mcu_adc_result(); +// return Volts * 40, range 0 to 6.375V +#define voltage_raw2cooked mcu_vdd_raw2cooked +inline uint8_t mcu_vdd_raw2cooked(uint16_t measurement); +inline uint8_t mcu_vdivider_raw2cooked(uint16_t measurement); + +// return (temp in Kelvin << 6) +#define temp_raw2cooked mcu_temp_raw2cooked +inline uint16_t mcu_temp_raw2cooked(uint16_t measurement); + inline uint8_t mcu_adc_lsb(); |