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Does the sdk7.1 + softdevice support flash_page_erase function?
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Also, for the spi_master api, is the spi_master_event_handler required or optional? currently, the code below,
volatile uint32_t err_code = spi_master_send_recv(spi_master_instance, p_tx_data, len, p_rx_data, len); if (err_code != NRF_SUCCESS) { return err_code;//Module Operation failed. Take recovery action. }
sometime gives NRF_ERROR_BUSY error, any reason?
thanks.