Si4355
5.3. Application Programming Interface
An Application Programming Interface (API) is embedded inside the device and is used for communications with
the host MCU. API commands are used to configure the device, control the chip during operation, and retrieve its
status. Available commands are shown in Table 13. The complete list of commands and their descriptions are
provided in application note, “AN691: EZRadio API Guide”.
Table 13. API Commands
#
0x00 NOP
0x01 PART_INFO
0x02 POWER_UP
0x10 FUNC_INFO
Name
Description
No operation command
Reports basic information about the device
Boot options and crystal frequency offset
Returns the function revision information of the device
0x11
SET_PROPERTY
Sets the value of a property
24
0x12 GET_PROPERTY
0x13 GPIO_PIN_CFG
0x14 GET_ADC_READING
0x15 FIFO_INFO
0x19 EZCONFIG_CHECK
0x20 GET_INT_STATUS
0x32 START_RX
0x33 REQUEST_DEVICE_STATE
0x34 CHANGE_STATE
0x44 READ_CMD_BUFF
0x50 CHIP_STATUS_INT_PEND_READ
0x51 MODEM_INT_PEND_READ
0x53 PH_INT_PEND_READ
0x57 RSSI_READ
0x66 EZCONFIG_SETUP
0x77 READ_RX_FIFO
Retrieves the value of a property
Configures the GPIO pins
Performs and retrieves ADC conversion results
Provides access to the RX FIFO counts and reset
Validates the EZConfig array was written correctly
Returns the interrupt status byte
Switches to RX state
Request current device state
Changes to a specified device state / mode
Used to read CTS and the command response
CHIP_STATUS_INT_PEND fast response register
MODEM_INT_PEND fast response register
PH_INT_PEND fast response register
RSSI fast response register
Configures device using EZConfig array
Reads the RX FIFO
Rev 1.0
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