LAUNCHXL-CC2640R2: Reduce Flash Size on BLE5 Simple_peripheral

Michael Liesenberg85

Mastermind 7560 points

Part Number: LAUNCHXL-CC2640R2

Hi,

can someone tell us how to reduce the 115k(90%) Flash size from ble5_simple_peripheral_cc2640r2lp_app?

How to do this on CCS step by step:

1. Disable display driver

2. disabling logging

I want to keep gapbondmgr and advertising extension code.

over 6 years ago

0 Evan Wakefield over 6 years ago

TI__Mastermind 38970 points

Hi Michael,

To reduce the flash size of the BLE5 apps, you can remove logging via the .opt file in the application project folder/TOOLS/defines/ble5_simple_peripheral_cc2640r2lp_app_FlashROM_StackLibrary.opt file and set the following to 0

-DBOARD_DISPLAY_USE_LCD=0
-DBOARD_DISPLAY_USE_UART=0
-DBOARD_DISPLAY_USE_UART_ANSI=0

This should save you around 5kb and then you can add -DFLASH_LAST_PAGE

0 Michael Liesenberg85 over 6 years ago in reply to Evan Wakefield

Mastermind 7560 points

Hi Evan,
i set the values and it went from 90% to 85% of flash used.

I went down to 83% now by removing all files with buttons also.

Thanks

0 Michael Liesenberg85 over 6 years ago in reply to Michael Liesenberg85

Mastermind 7560 points

Hi so i am still getting an error even if i am using 98% of the flash space:

So why is failing to allocate, if flash memory has still 2% unused?

0 Evan Wakefield over 6 years ago in reply to Michael Liesenberg85

TI__Mastermind 38970 points

I have a feeling this could be due to the FLASH_LAST_PAGE. I'm trying to find documentation on it though. I know there is a small trade off in the linker file when using this define. Can you try removing it and shrinking your code a little to see what happens?

0 Michael Liesenberg85 over 6 years ago in reply to Evan Wakefield

Mastermind 7560 points

Hi Evan,
where do i remove the FLASH_LAST_PAGE define? I dont see it on Predefined Symbols.
By shrinking the code only it will give me less percentage like 96% but i still get failed allocation.

0 Evan Wakefield over 6 years ago in reply to Michael Liesenberg85

TI__Mastermind 38970 points

I guess what i meant what not a predefined, but the -DFLASH_LAST_PAGE in the .opt file that i discussed in my first post. What happens if you remove it? Can you send me your .map file?

0 Michael Liesenberg85 over 6 years ago in reply to Evan Wakefield

Mastermind 7560 points

Hi Evan,

on the .opt file, i dont have the -DFLASH_LAST_PAGE :

-DBOARD_DISPLAY_USE_LCD=0

-DBOARD_DISPLAY_USE_UART=0

-DBOARD_DISPLAY_USE_UART_ANSI=0

-DCC2640R2_LAUNCHXL

-DCC26XX

-DCC26XX_R2

-DDeviceFamily_CC26X0R2

-DICALL_EVENTS

-DICALL_JT

-DICALL_LITE

-DICALL_MAX_NUM_ENTITIES=6

-DICALL_MAX_NUM_TASKS=3

-DICALL_STACK0_ADDR

-DMAX_NUM_BLE_CONNS=1

-DPOWER_SAVING

-DRF_SINGLEMODE

-DSTACK_LIBRARY

-DTBM_ACTIVE_ITEMS_ONLY

-DUSE_ICALL

-Dxdc_runtime_Assert_DISABLE_ALL

-Dxdc_runtime_Log_DISABLE_ALL

Please find attached the ble_simple_peripheral_cc2640r2lp_app.map file.

ble5_simple_peripheral_cc2640r2lp_app.rar

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LAUNCHXL-CC2640R2: Reduce Flash Size on BLE5 Simple_peripheral