SMBus on STM32C031

[LsnLeeJW]

Hi ST tesam,

When I use  HAL_SMBUS_Master_Receive_IT( ) to receive data from device ,I can not got the information directly after the HAL_SMBUS_MasterRxCpltCallback( SMBUS_HandleTypeDef *hsmbus ) was complete.

(I had set a flag when HAL_SMBUS_MasterRxCpltCallback( SMBUS_HandleTypeDef *hsmbus )  done)

I had to wait for a while and then I can read data from register, but what can I do to know when the saving process was complete?

Regards,

LSN

[Saket_Om]

Hello @LsnLeeJW and welcome to the community

Could you please provide the source code for this implementation?

[LsnLeeJW]

Hello，Omar.

Thank for your reply，I've attached the snippet of the code.

Here I try to use 'HAL_SMBUS_MasterRxCpltCallback' to notify me whether the data was received,but it don't works.Is there a better way for me to know whether the data has been stored in memory?

[Saket_Om · Accepted solution]

Hello @LsnLeeJW 

Could you please try to check the state in the SMBUS handle instead of checking bSMBusRxCpltFlag flag? 

Please refer to the snippet code below to implement this solution: 

        
HAL_SMBUS_Master_Receive_IT( &hsmbus1, BATTERY_ADD, &ucCalTemp[ 3 ], dataLength + 1 , SMBUS_LAST_FRAME_NO_PEC );
while (hsmbus1.State == HAL_SMBUS_STATE_MASTER_BUSY_RX);

[LsnLeeJW]

It works ， thanks for your help.