3 Configuration or Evaluation Tool

The Smart Fuse Configurator tool is a software host tool that can be used along side of the HSS-HCMOTHERBRDEVM to live configure an HCS high-side switch as well as read out diagnostics such as current sense and fault conditions. Additionally, starting from version 1.9.4 the software has the ability to enter configuration mode without the need for a physical EVM board. In configuration mode, the user is able to change all different aspects of the device's settings such as current limit, capacitive charging modes, diagnostic reporting, and so on. The use can also use the I2T tuner to configure the device to match the wire profile and capabilities of the melting fuse being replaced. To enter configuration mode, select Help->Demo/Config Mode as shown in Figure 3-1:

Once in demo mode, the user can use the software as described in the Smart Fuse Evaluation Module user's guide. Note that actual communication with the EVM are not performed in this mode and any diagnostics reported on the GUI are also not reflected. Demo mode can be exited by either selecting Help->Demo/Config Mode or by plugging in an EVM to the device.

Once the device has been configured to meet the application needs, the configuration can be exported by selecting Export->Configuration Files:

The files that are exported from this dialog are the same configuration files that come packaged with the provided code examples (default titled tps2hcsxx_config.h and tps2hcsxx_config.c). As an easy point-of-entry, the configuration files can be exported to the Empty Example (Section 4.1) and override the defaults file for a blank program used to start smart fuse development.

Note that the exported configuration files depend on the device specific header file that is provided on the project page. This header file contains all off the register definitions and enumerations relevant to the specific high-side switch part number.

The exported files contains a register definition that corresponds to every relevant configuration register of the device:

typedef struct TPS2HCSXXQ1_CONFIG
{
    TPS2HCSXX_CRC_CONFIG_OBJ        crcConfig;
    TPS2HCSXX_LPM_OBJ               lpmConfig;
    TPS2HCSXX_FAULT_MASK_OBJ        faultMaskConfig;
    TPS2HCSXX_SW_STATE_OBJ          swState;
    TPS2HCSXX_DEV_CONFIG_OBJ        devConfig;
    TPS2HCSXX_ADC_CONFIG_OBJ        adcConfig;
    TPS2HCSXX_PWM_CH1_OBJ           pwmCh1Config;
    TPS2HCSXX_ILIM_CONFIG_CH1_OBJ   ilimCh1Config;
    TPS2HCSXX_CH1_CONFIG_OBJ        diagConfigCh1;
    TPS2HCSXX_I2T_CONFIG_CH1_OBJ    i2tConfigCh1;
    TPS2HCSXX_PWM_CH2_OBJ           pwmCh2Config;
    TPS2HCSXX_ILIM_CONFIG_CH2_OBJ   ilimCh2Config;
    TPS2HCSXX_CH2_CONFIG_OBJ        diagConfigCh2;
    TPS2HCSXX_I2T_CONFIG_CH2_OBJ    i2tConfigCh2;
 } TPS2HCSXXQ1_CONFIG;

A pointer to this function is passed into the HCS_initializeDevice function of the platform driver (typically at microcontroller boot-up) to initially configure the high-side switch. After the structure definition, an instantiation of the structure is declared with values that represent all of the configured value from the Smart Fuse Configurator tool. The user can user this instantiation as a starting point and update manually through the code if a change is required, or regenerate the configuration file from the Smart Fuse Configurator program.