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author | Christian Mauderer <christian.mauderer@embedded-brains.de> | 2021-07-15 15:31:17 +0200 |
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committer | Christian Mauderer <christian.mauderer@embedded-brains.de> | 2021-07-29 16:50:40 +0200 |
commit | 238b48f9f8b0a9126b75d058ac4392cbe483af5b (patch) | |
tree | ed36a7008f6243e22d2ed17f360547d2b28f54f9 /user/bsps/arm | |
parent | c-user: Remove _Internal_errors_What_happened (diff) | |
download | rtems-docs-238b48f9f8b0a9126b75d058ac4392cbe483af5b.tar.bz2 |
user/imxrt: Add notes about problems with EVB
There are some possible problems with the i.MXRT1050 evaluation board.
Make some notes about that in the BSP manual.
Diffstat (limited to 'user/bsps/arm')
-rw-r--r-- | user/bsps/arm/imxrt.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/user/bsps/arm/imxrt.rst b/user/bsps/arm/imxrt.rst index 3f8b270..f8d9731 100644 --- a/user/bsps/arm/imxrt.rst +++ b/user/bsps/arm/imxrt.rst @@ -10,6 +10,10 @@ This BSP offers only one variant, the `imxrt1052`. This variant supports the i.MXRT 1052 processor on a IMXRT1050-EVKB (tested with rev A1). You can also configure it to work with custom boards. +NOTE: The IMXRT1050-EVKB has an backlight controller that must not be enabled +without load. Make sure to either attach a load, disable it by software or +disable it by removing the 0-Ohm resistor on it's input. + Build Configuration Options --------------------------- @@ -41,6 +45,11 @@ Then just copy the generated binary to the mass storage provided by the debugger. Wait a bit till the mass storage vanishes and re-appears. After that, reset the board and the newly programmed application will start. +NOTE: It seems that there is a bug on at least some of the on board debuggers. +They can't write more than 1MB to the HyperFlash. If your application is bigger +than that (like quite some of the applications in libbsd), you should use an +external debugger or find some alternative programming method. + For debugging: Create a special application with a `while(true)` loop at end of `bsp_start_hook_1`. Load that application into flash. Then remove the loop again, build your BSP for SDRAM and use a debugger to load the application into |