04bbba6c12
Rename guhRF platform to osd-merkur-256, previous osd-merkur platform is now osd-merkur-128. Also check that everything is consistent. Add both platforms to the regression tests. Move redundant files in platform dev directory of both platforms to cpu/avr/dev. Note that this probably needs some rework. Already discovered some inconsistency in io definitions of both devices in the avr/io.h includes. Added a workaround in the obvious cases. The platform makefiles now set correct parameters for bootloader and for reading mac-address from flash memory. Factor the flash programming into cpu/avr and platform/osd-merkur* and rework *all* osd example makefiles to use the new settings. Also update all the flash.sh and run.sh to use the new settings. The suli ledstrip modules (and osd example) have also been removed.
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#ifndef __ADC_ARCH_H__
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#define __ADC_ARCH_H__
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#include <avr/io.h>
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/*
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* Reference voltage
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* The default is 1.6V reference voltage
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* The selected reference voltage is the maximum voltage that can be
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* measured.
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* Directly provide shifted variants so we don't need to shift.
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*/
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#define ADC_1_5 (2<<6)
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#define ADC_1_6 (3<<6)
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#define ADC_1_8 (1<<6)
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#define ADC_EXTERNAL (0<<6)
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#define ADC_DEFAULT ADC_1_6
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/* sometimes it's desirable to decouple setup / finish from sampling */
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static inline void adc_setup (uint8_t ref_volt, uint8_t pin)
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{
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ADMUX = ref_volt | (pin & 0x7);
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ADCSRA = _BV(ADEN) | _BV(ADPS0) | _BV(ADPS2);
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}
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static inline int adc_read (void)
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{
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ADCSRA |= (1 << ADSC);
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loop_until_bit_is_clear (ADCSRA, ADSC);
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return ADC;
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}
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static inline void adc_fin (void)
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{
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ADCSRA = 0;
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ADMUX = 0;
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}
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static inline void adc_init (void)
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{
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uint8_t temp;
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ADCSRC = 0;
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ADCSRB = 0;
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adc_fin ();
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/*
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* Disable JTAG interface
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* Hardware manual about JTD bit:
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* "In order to avoid unintentional disabling or enabling of the
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* JTAG interface, a timed sequence must be followed when changing
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* this bit: The application software must write this bit to the
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* desired value twice within four cycles to change its value."
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* 15.4.1 "MCUCR - MCU Control Register", p. 219
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*/
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temp = MCUCR | (1 << JTD);
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MCUCR = temp;
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MCUCR = temp;
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}
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int readADC(uint8_t pin);
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long readVcc();
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int readInternalTemp(void);
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void analogReference(uint8_t mode);
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#endif /* __ADC_ARCH_H__ */
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