fsl_os_abstraction_threadx

johvis — Wed, 22 Feb 2023 11:02:26 GMT

Hello Everyone
I am new to iMXRT1166 eval
MCUXpresso SDK 2.x_MIMXRT1160-EVK

there is an example "evkmimxrt1160_shell_cm7" which works fine.
It runs ins "baremetal" mode.

I can see thant "fsl_shell" supports OS like Free RTOS and "OSA" (OS abstraction)
There is a packet in the SDK "osa", which seems to be correct.

I would like to use it with AZURE RTOS threadx

When enabling, it refers to "fsl_os_abstraction_threadx.c"

This is not part of the SDK.

Is there an instance of these files somewhere?

I found this one :
https://github.com/Masmiseim36/nxpSDK/blob/master/components/osa/fsl_os_abstraction_threadx.h

but it seesm to be incomplete.

thank you
Johannes

Re: fsl_os_abstraction_threadx

johvis — Wed, 22 Feb 2023 14:06:09 GMT

I made shell work with Azure RTOS.
I found a problem in fsl_shell.c

typedef struct _shell_context_handle { list_label_t commandContextListHead; /*!< Command shellContextHandle list queue head */ serial_handle_t serialHandle; /*!< Serial manager handle */ uint8_t serialWriteHandleBuffer[SERIAL_MANAGER_WRITE_HANDLE_SIZE]; /*!< The buffer for serial manager write handle */ serial_write_handle_t serialWriteHandle; /*!< The serial manager write handle */ uint8_t serialReadHandleBuffer[SERIAL_MANAGER_READ_HANDLE_SIZE]; /*!< The buffer for serial manager read handle */ serial_read_handle_t serialReadHandle; /*!< The serial manager read handle */ char *prompt; /*!< Prompt string */ #if (defined(SHELL_NON_BLOCKING_MODE) && (SHELL_NON_BLOCKING_MODE > 0U)) #if defined(OSA_USED) #if (defined(SHELL_USE_COMMON_TASK) && (SHELL_USE_COMMON_TASK > 0U)) common_task_message_t commontaskMsg; /*!< Message for common task */ #else uint8_t event[OSA_EVENT_HANDLE_SIZE] ; /*!< Event instance */ uint8_t taskId[OSA_TASK_HANDLE_SIZE] ; /*!< Task handle */ #endif #endif #endif char line[SHELL_BUFFER_SIZE]; /*!< Consult buffer */ char hist_buf[SHELL_HISTORY_COUNT][SHELL_BUFFER_SIZE]; /*!< History buffer*/ char printBuffer[SHELL_SPRINTF_BUFFER_SIZE]; /*!< Buffer for print */ uint32_t printLength; /*!< All length has been printed */ uint16_t hist_current; /*!< Current history command in hist buff*/ uint16_t hist_count; /*!< Total history command in hist buff*/ enum _fun_key_status stat; /*!< Special key status */ uint8_t cmd_num; /*!< Number of user commands */ uint8_t l_pos; /*!< Total line position */ uint8_t c_pos; /*!< Current line position */ volatile uint8_t notificationPost; /*!< The serial manager notification is post */ uint8_t exit; /*!< Exit Flag*/ uint8_t printBusy : 1; /*!< Print is busy */ uint8_t taskBusy : 1; /*!< Task is busy */ } shell_context_handle_t;

uint8_t taskId[OSA_TASK_HANDLE_SIZE] is used to host a struct of TX_THREAD.
I don't know, why this placeholder of type uint8_t is necessary, but the effect is, that the portion "taskId" ends up on a non-aligned memory address and causes the task creation to crash

this fixes the issue, (in fsl_shell.c)

#else uint8_t event[OSA_EVENT_HANDLE_SIZE] __attribute__((aligned (4))); /*!< Event instance */ uint8_t taskId[OSA_TASK_HANDLE_SIZE] __attribute__((aligned (4))); /*!< Task handle */ #endif

this is working now.

I attached the whole project.
It uses the missing OSA abstraction files for threadx from here:
https://github.com/Masmiseim36/nxpSDK/blob/master/components/osa/fsl_os_abstraction_threadx.h

Johannes

topic Re: fsl_os_abstraction_threadx in MCUXpresso SDK

fsl_os_abstraction_threadx

Re: fsl_os_abstraction_threadx