flm01/mote/v2/avr/main.h

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#define SPI_NO_OP_1 1
#define SPI_NO_OP_2 2
#define SPI_START_TX 4
#define SPI_TRANSMIT 8
#define SPI_HIGH_HEX 16
#define SPI_TO_FROM_UART 32
#define SPI_NEW_CTRL_MSG 64
#define SPI_END_OF_TX 0x00
#define SPI_END_OF_MESSAGE '.'
#define SPI_FORWARD_TO_UART_PORT 'u'
#define SPI_FORWARD_TO_CTRL_PORT 'l' // 'l'ocal port
struct event_struct {
uint16_t wdt;
uint16_t brown_out;
};
struct sensor_struct {
uint32_t counter;
uint16_t meterconst;
};
# define WATT 1000000000
# define SECOND 665 // 666Hz - 1
#define STATE_PULSE 1
#define STATE_SKIP 2
#define STATE_POWER_CALC 4
#define STATE_POWER 8
struct state_struct {
uint8_t flags;
uint32_t nano;
uint32_t nano_start;
uint32_t nano_end;
uint8_t pulse_count;
uint8_t pulse_count_final;
uint32_t power;
uint32_t timestamp;
};
struct time_struct {
uint8_t skip;
uint32_t ms;
};
/*
* This macro performs a 16x16 -> 32 unsigned MAC in 37 cycles with operands and results in memory
* based on http://www2.ife.ee.ethz.ch/~roggend/publications/wear/DSPMic_v1.1.pdf par 3.4 and table 31.
*/
#define MacU16X16to32(uint_32Acc, uint_16In1, uint_16In2) \
asm volatile ( \
"clr r2 \n\t" \
"mul %B2, %B1 \n\t" \
"movw r4, r0 \n\t" \
"mul %A2, %A1 \n\t" \
"add %A0, r0 \n\t" \
"adc %B0, r1 \n\t" \
"adc %C0, r4 \n\t" \
"adc %D0, r5 \n\t" \
"mul %B2, %A1 \n\t" \
"add %B0, r0 \n\t" \
"adc %C0, r1 \n\t" \
"adc %D0, r2 \n\t" \
"mul %A2, %B1 \n\t" \
"add %B0, r0 \n\t" \
"adc %C0, r1 \n\t" \
"adc %D0, r2 \n\t" \
"clr r1 \n\t" \
: \
"+r" (uint_32Acc) \
: \
"a" (uint_16In1), \
"a" (uint_16In2) \
: \
"r2", "r4", "r5" \
)