ROM
7.6.1
7.6.1.1
RMF_GET_DEVICE_INFO
Description
This function returns the 32-bit device ID (DID). The device ID is a part of the “rights management”
system described in “Security and rights management” on page 77 . In addition to the device ID, this
function also returns hardware and software version numbers.
Typically, a master controller will request this information of the MMA95XX as the first step in initiating
an upgrade.
7.6.1.2
RMF_GET_DEVICE_INFO structure syntax
No parameters are necessary. Supply a NULL structure pointer to the call_trap() function when invoking
this function.
Example 7-3. Output structure syntax
typedef struct {
unsigned long id;
char rom_major;
char rom_minor;
char ft_flash_major;
char ft_flash_minor;
char hw_major;
char hw_minor;
} rmf_device_info_t;
7.6.1.3
RMF_GET_DEVICE_INFO error codes
This function always succeeds. There are no error codes.
7.6.1.4
RMF_GET_DEVICE_INFO operation
This function simply returns a number of values stored within the flash-information row.
Table 7-41. Return parameters for RMF_GET_DEVICE_INFO
Variable
id
rom_major
rom_minor
ft_flash_major
ft_flash_minor
hw_major
hw_minor
Function
32-bit relatively unique identifier for this unit
Major version number for ROM software
Minor version number for ROM software
Major version number for Freescale flash content
Minor version number for Freescale flash content
Major version number for this device type
Minor version number for this device type
MMA955xL Intelligent, Motion-Sensing Platform Hardware Reference Manual, Rev. 1.0
104
Freescale Semiconductor, Inc.
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