diff options
| author | David Crocker <dcrocker@eschertech.com> | 2022-07-05 00:58:48 +0300 |
|---|---|---|
| committer | David Crocker <dcrocker@eschertech.com> | 2022-07-05 00:58:48 +0300 |
| commit | 88b925276f2b81b9daf2c0c95b08fe47634bc7fa (patch) | |
| tree | 438ac5b63ee9075309462d12f6f7e01bdbfac9e7 | |
| parent | 243be4d5d2895dd650a0eab55d9932b5b60291bb (diff) | |
Limit step pulse width on MB6XD to take account of 16-bit timer
| -rw-r--r-- | src/Platform/Platform.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/Platform/Platform.cpp b/src/Platform/Platform.cpp index c9bb41c7..e9dfb10f 100644 --- a/src/Platform/Platform.cpp +++ b/src/Platform/Platform.cpp @@ -2781,10 +2781,8 @@ void Platform::UpdateDriverTimings() noexcept // Convert the step pulse width to clocks of the step pulse gate timer. First define some constants. constexpr uint32_t StepGateTcClockFrequency = (SystemCoreClockFreq/2)/8; constexpr float StepGateClocksPerMicrosecond = (float)StepGateTcClockFrequency/1.0e6; - - const float fclocks = ceilf(worstTimings[0] * StepGateClocksPerMicrosecond); - const uint32_t gateClocks = (uint32_t)fclocks; - STEP_GATE_TC->TC_CHANNEL[STEP_GATE_TC_CHAN].TC_RC = gateClocks; + const float fclocks = min<float>(ceilf(worstTimings[0] * StepGateClocksPerMicrosecond), 65535.0); // the TC is only 16 bits wide + STEP_GATE_TC->TC_CHANNEL[STEP_GATE_TC_CHAN].TC_RC = (uint32_t)fclocks; // Convert the quantised step pulse width back to microseconds const float actualStepPulseMicroseconds = fclocks/StepGateClocksPerMicrosecond; |