[riot-notifications] [RIOT-OS/RIOT] cpu/efm32: fix i2c transfers (#15764)

Bas Stottelaar notifications at github.com
Thu Jan 14 00:28:42 CET 2021


@basilfx commented on this pull request.



>  
-        if (i2c_progress[dev] == i2cTransferInProgress && timeout--) {
-            cortexm_sleep_until_event();
-        }
-        else {
-            busy = false;
-        }
+    while (i2c_progress[dev] == i2cTransferInProgress && counter--) {}

Oops, I meant xtimer instead of scheduler ;-)

It needs this because the SLTB001a contains another MCU (power-interrupt-controller) that is responsible for enabling power lines. It needs to enable all the sensors before `auto_init` kicks in. There is currently no `board_init` that runs after xtimer has started.

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