AN230264 Getting started with PSOC HV PA family

PSOC™ HV PA has an SWD interface to connect with third-party debuggers. The debug pin of SWD is shared with the GPIO port (P0[6] and P0[7]). For more information, see AN230265 - Hardware design guide for PSOC™ HV PA family. Figure 4 and Figure 5 show an example of the basic connection for PSOC™ HV PA devices. Note that the external resistors are optional.

The following steps are involved in the device startup sequence:

1. System reset (at 0x0000 0000)
2. CM0+ in SROM/boot
3. Device in privilege mode
4. Perform trimming of the device based on the 64-bit key
5. SWD initialized
6. APIs executed from Arm® CM0+ NMI
7. APIs for the flash program, erase, and read
8. APIs to retrieve data from privilege registers
9. Transfer control to the user program
10. Device in user mode
11. CM0+ executes the user application from the code flash region

The following steps are involved in the application startup sequence:

1. System reset (at 0x0000 0000).
2. CM0+ executes "SystemInit"
3. Disables WDT
4. Applies flash wait states
5. Clock selection
6. Enables generic system IRQ
7. Continues execution of CM0+ user application

The application startup sequence process is executed after the boot process completes. In the boot process, according to the lifecycle stage, protection status and debug access restriction settings are mainly performed, and application authentication is performed. In the application startup sequence process, initial settings necessary for program execution such as disabling the WDT, applying flash wait state, and clock settings are completed, and then execution jumps to the main routine. CM0+ executes the boot code after reset.

Figure 6 describes the PSOC™ HV PA device startup flow.

Code Listing 1 Sample code for CM0+ startup and Code Listing 2 Sample code for CM0+ main function show a sample code for the CM0+ startup and main function respectively.

;************************************************************************
;* Start-up Code
;************************************************************************
      THUMB
      PUBWEAK Reset_Handler
      SECTION .text:CODE:REORDER:NOROOT(2)
Reset_Handler:
            
; Disable global interrupts
      CPSID   I
            
; Update Vector Table Offset Register with address of user ROM table
; (will be updated later to user RAM table address in C startup code)
      LDR  r0, =__vector_table
      LDR  r1, =VTOR
      STR  r0, [r1]
      DSB

; Initialize ECC of startup stack (needed for local variables in C startup code) by processing 8 bytes per loop iteration,

; Prerequisite: Stack Pointer (SP) has not been modified (from the vector table init value) by above code (otherwise code must be adapted)
      MOVS r0, #0 ; clear value
      MOVS r1, #0 ; clear value
      LDR  r2, Cy_u32StartupStackStartAddress
startup_stack_ecc_init_loop:
      STM  r2!, {r0, r1}
      CMP  r2, sp
      BNE  startup_stack_ecc_init_loop
            
; Call C startup code (no ANSI C context established yet!)
      LDR  r7, =Startup_Init
      BLX  r7
            
; Initialize data sections
      LDR  r7, =__iar_data_init3
      BLX  r7
            
      LDR  r7, =__iar_program_start
      BLX  r7
            
; Note: Control flow does not necessarily return here.
; On some tool-chains (e.g. IAR) control flow will never return from
; the system library.
Cy_Main_Exited:
      B    Cy_Main_Exited

#include "intrinsics.h" /* To use IAR embedded function */
#include "startup.h"
#include "bb_bsp.h"
#include "cy_common_def.h"
#include "cy_error_callout.h"
#include "cy_gpio.h"
#include "cy_sysclk.h"
#include "cy_syslib.h"
int main(void)
{
uint8 flag = 1;
SystemInit();
__enable_interrupt(); /* Enable global interrupts. */
/* Initialize USER LED1 port/pin */
Cy_Gpio_SetPinMode(CY_USER_LED1_PORT_IDX, CY_USER_LED1_PIN, CY_USER_LED1_MUX);
Cy_Gpio_SetDriveMode(CY_USER_LED1_PORT_IDX, CY_USER_LED1_PIN,
CY_GPIO_DRIVE_MODE_STRONG);
/* Initialize USER LED2 port/pin */
Cy_Gpio_SetPinMode(CY_USER_LED2_PORT_IDX, CY_USER_LED2_PIN, CY_USER_LED2_MUX);
Cy_Gpio_SetDriveMode(CY_USER_LED2_PORT_IDX, CY_USER_LED2_PIN,
CY_GPIO_DRIVE_MODE_STRONG);
for(;;)
{ // Wait 0.05 [s]
Cy_SysLib_DelayUs(50000);
switch(flag)
{
case 1:
Cy_Gpio_Inv(CY_USER_LED1_PORT_IDX, CY_USER_LED1_PIN);
flag = 2;
break;
case 2:
Cy_Gpio_Inv(CY_USER_LED2_PORT_IDX, CY_USER_LED2_PIN);
flag = 1;
break;
default:
Cy_Gpio_Inv(CY_USER_LED1_PORT_IDX, CY_USER_LED1_PIN);
break;
}
}
}

This section describes the operation with PSOC™ HV PA devices with AutoPDL as an example.

AutoPDL Operational Conditions:

• CPU : PSOC™ HV PA devices (32-QFN)
• Target board : CYHVPA-128K-32-001 Evaluation Board
• IDE : IAR Embedded Workbench for Arm® 8.50.10
• ICE : IAR I-jet Debugger or onboard KitProg3

Install IAR Embedded Workbench 8.50.10 in advance and ensure that the licenses are properly enabled.

The following sections provide information on the installation procedures and licensing details for AutoPDL.

1. Navigate to the AutoPDL folder and open the PSOC4hvpa144k_Eva_license.eww file.

   C:\INFINEON_AUTO_SW\PSOC4HV_PDL_MW_Vxxxxx\examples\Tools\PSOC4hvpa144k

   Note: If you use the source code license, open the PSOC4hvpa144k_flash_cm0plus_template.eww.
   
   
   
2. Double-click on main_cm0plus.c in the left panel. Details of the sample code are shown (see Code Listing 2).
   
   

3. Write the Define value for your target device.

   e.g. C:\INFINEON_AUTO_SW\PSOC4HV_PDL_MW\source\userenv\cy_pdl_config.h

   The device names supported by the standard evaluation board are as follows:

   • HVPA144K: CY8C4147LCE_HV423 (Evaluation board) or CY8C4147LCE_HV413 (Lite-Kit Board)
   • HVMS64K: CY8C4146LWE_HVS115
   • HVMS128K: CY8C4147LWE_HVS135X
   • HVPASPM-C: CY8C4147LDE_HV734

   If you are using a Lite-Kit board, please also add the following definitions.

   • HVPA144K: KIT_PSOC4_HVPA_144K_LITE
   • HVMS128K: KIT_PSOC4_HVMS_128K_LITE

   If you are using HVPA-144K_LITE, change it as follows:

   
   
   
4. Select Project > Rebuild All to build the project.
   
   
   Note: If you didn’t request a SafeTlib license, two errors will occur. If you see the errors, remove the cy_pstl_user_callout.c and libpstl.a files and then select Rebuild all. To remove the cy_pstl_user_callout.c file, right-click the file and then click Remove. To remove the libpstl.a file, navigate to Project > Options > Linker > Library tab and click the ellipses button next to the Additional libraries pane. Select libpstl.a and click remove (×).
   
   
   
   
   
5. Connect the USB cable to the J4 and 12V wall Adapter to the J22 of the CYHVPA-128K-32-001 Evaluation Board with the power supply (See Figure 8). See the PSOC™ HV PA Evaluation Board user guide 3 for more detailed information.

   
   
   

6. Download the project to PSOC™ 4 HVPA-144K device by selecting Project > Download > Download active application.
   
   
7. Push the reset switch (SW2) on the CYHVPA-128K-32-001 Evaluation Board and then confirm that the LED D6 and D7 are blinking.
   • Download the application using the IAR I-JET debugger
   Note: If you do not have the IAR I-jet Debugger, then skip Steps 8 to 10.
8. Connect the IAR I-jet Debugger to either J3 (MIPI 20-pin) or J5 (MIPI 10-pin) of the CYHVPA-128K-32-001 Evaluation Board with power supply (See Figure 9). See the PSOC™ HV PA Evaluation Board user guide 4 for more detailed information.

   
   
   

   Note: Please check I-jet is set for Debugger. In case of the CMSIS DAP program, the menu name shows CMSIS DAP. If it isn’t, navigate to Project > Options > Debugger and select I-jet at Driver.
   
   
   
   
   
9. • Download the project to PSOC™ HV PA device by selecting Project >Download > Download active application.
     
     
10. • Push the reset switch (SW2) on the CYHVPA-128K-32-001 Evaluation Board and then confirm that the LED D6 and D7 is blinking.
      • Download the application using the onboard KitProg3
11. Connect the USB cable to the J4 of the CYHVPA-128K-32-001 Evaluation Board with the power supply (See Figure 10). See the PSOC™ HV PA Evaluation Board user guide 4 for more detailed information.

    
    
    

12. Select Project > Options… to change the debugger settings.
    
    
13. Select CMSIS DAP from Options and select the Interface tab. Change the settings as shown in:
    • Probe config -> Auto
    • Interface speed -> 2MHz
      
      
14. Click OK and re-select Project > Rebuild All to build the project.
    
    
15. Download the project to PSOC™ HV PA device by selecting Project > Download > Download active application.
    
    

16. Push the reset switch (SW2) on the CYHVPA-128K-32-001 Evaluation Board and then confirm that the LED D6 and D7 is blinking.

    To debug the project using either IAR I-JET debugger or onboard KitProg3 (CMSIS DAP), select Project > Download and Debug. For more information on debugging, see the IAR EWARM IDE project management and building guide 5.
    
    

The other code examples are in the examples folder.

1. Go to any code sample folder (e.g., adc > triple) and copy the main_cm0plus.c file in the folder.
   
   
2. Navigate to PSOC4HV_PDL_MW_Vxxxxx\examples\Tools\PSOC4hvpa144k and replace the copied main_cm0plus.c file.
   
   
3. From the same folder, open PSOC4hvpa144k_Eva_license.eww (or PSOC4hvpa144k_flash_cm0plus_template.eww for source file license) to open the IAR EWARM sample project.
4. Rebuild and download the project to the board. See the C:\INFINEON_AUTO_SW\PSOC4HV_PDL_MW_Vxxxxx\examples\readme.pdf file of the sample codes for a detailed explanation of the use case.