SPI_class Module

class SPI_class.SPI(H)

Methods to interact with the SPI port. An instance of Packet_Handler must be passed to the init function

set_parameters(primary_prescaler=0, secondary_prescaler=2, CKE=1, CKP=0, SMP=1)

sets SPI parameters.

Arguments
primary_pres	Primary Prescaler(0,1,2,3) for 64MHz clock->(64:1,16:1,4:1,1:1)
secondary_pres	Secondary prescaler(0,1,..7)->(8:1,7:1,..1:1)
CKE	CKE 0 or 1.
CKP	CKP 0 or 1.

start(channel)

selects SPI channel to enable. Basically lowers the relevant chip select pin .

Arguments
channel	1-7 ->[PGA1 connected to CH1,PGA2,PGA3,PGA4,PGA5,external chip select 1,external chip select 2] 8 -> sine1 9 -> sine2

stop(channel)

selects SPI channel to disable. Sets the relevant chip select pin to HIGH.

Arguments
channel	1-7 ->[PGA1 connected to CH1,PGA2,PGA3,PGA4,PGA5,external chip select 1,external chip select 2]

send8(value)

SENDS 8-bit data over SPI

Arguments
value	value to transmit

Returns:value returned by slave device

send16(value)

SENDS 16-bit data over SPI

Arguments
value	value to transmit

Returns:value returned by slave device Return type:int

send8_burst(value)

SENDS 8-bit data over SPI No acknowledge/return value

Arguments
value	value to transmit

Returns:Nothing

send16_burst(value)

SENDS 16-bit data over SPI no acknowledge/return value

Arguments
value	value to transmit

Returns:nothing