TwiMaster is now based on the NRFX TWI driver, as it handles more edge cases and workarounds for errors on the bus.

Reset the TWI bus after the soft-reset of the motion sensor to workaround issues on the TWI bus.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/drivers/Bma421.h b/src/drivers/Bma421.h
index d36d1db..da021cb 100644
--- a/src/drivers/Bma421.h
+++ b/src/drivers/Bma421.h
@@ -18,6 +18,9 @@ namespace Pinetime {
       Bma421(Bma421&&) = delete;
       Bma421& operator=(Bma421&&) = delete;
 
+      /// The chip freezes the TWI bus after the softreset operation. Softreset is separated from the
+      /// Init() method to allow the caller to uninit and then reinit the TWI device after the softreset.
+      void SoftReset();
       void Init();
       Values Process();
       void ResetStepCounter();
@@ -34,6 +37,7 @@ namespace Pinetime {
       uint8_t deviceAddress = 0x18;
       struct bma4_dev bma;
       bool isOk = false;
+      bool isResetOk = false;
     };
   }
 }
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