Directed Electronics 3200HS Informações Técnicas descarregar pdf (Página 31)

SCI to SPI Peripheral Communication in V850ES Microcontrollers

Figure 19. MD_INTCSI00() : Interrupt Service Routine for INTCSI00

Yes

TX_CNT ==

TX_LEN?

Yes

TX_CNT ==

TX_LEN?

SOTB0L = *CSI00_TX_ADDRESS

CSI00_TX_ADDRESS ++

CSI00_TX_CNT ++

SOTB0L = *CSI00_TX_ADDRESS

CSI00_TX_ADDRESS ++

CSI00_TX_CNT ++

Return

Yes

RX_CNT + 1

< RX_LEN?

Yes

RX_CNT + 1

< RX_LEN?

CALL CALL_CSI00_Send( )

Yes

TX_CNT <

TX_LEN?

Yes

TX_CNT <

TX_LEN?

INTCSI00

Yes

RX_LEN == 0?

Yes

RX_LEN == 0?

*CSI00_RX_ADDRESS = SIRB0L

CSI00_RX_ADDRESS ++

CSI00_RX_CNT ++

*CSI00_RX_ADDRESS = SIRB0L

CSI00_RX_ADDRESS ++

CSI00_RX_CNT ++

*CSI00_RX_ADDRESS = SI000

CSI00_RX_CNT ++

CALL CALL_CSI00_Receive( )

*CSI00_RX_ADDRESS = SI000

CSI00_RX_CNT ++

CALL CALL_CSI00_Receive( )

Return

After processing transmit data and optional received data, the MD_INTCSI00() routine returns to

the program at the place where the INTCSI00 interrupt occurred.

2.6.10 Temp_Read_1(): Read Temperature Sensor 1 (MAX6627)

The Temp_Read_1() routine reads the latest temperature reading from the MAX6627 temperature

sensor, and returns the value read as a signed 16-bit value, equivalent to (temperature in ºC) × 128.

First the CSI00_SetType4() routine is called, to set the CSI00 transfer type to the proper setting for

this device. Then the chip select for the temperature sensor is set on (active low). A short delay is

inserted to allow 100ns from chip select to the first serial clock.

The routine then calls CSI00_ReceiveData(rxbuf, 2) to set the location and count of bytes to be

read from the CSI00 peripheral. The first parameter, rxbuf, is a pointer to an array of byte values

to hold the data read; the second parameter, 2, is the count of bytes to receive.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 98 99

Comentários a estes Manuais

Sem comentários

Directed Electronics 3200HS Informações Técnicas Página 31

Comentários a estes Manuais