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changeset 772:2e16284d5029

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simagent/timeout.h: empirical calibration done
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 12 Mar 2021 20:55:36 +0000
parents 9c1d580b50fb
children 6d1b22d4926f
files target-utils/simagent/timeout.h
diffstat 1 files changed, 11 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/simagent/timeout.h	Fri Mar 12 20:55:36 2021 +0000
@@ -0,0 +1,11 @@
+/*
+ * This header file defines the loop-count timeout value that should
+ * be passed to the rx_sim_byte() function.  By the spec we have to wait
+ * 9600 etu's; at 3.25 MHz SIM clock and the default slow mode (no speed
+ * enhancement) this 9600 etu number translates to about 1.10 s.
+ *
+ * The constant defined here has been calibrated empirically; the measured
+ * timeout is about 1.38 s, giving us reasonable safety margin.
+ */
+
+#define	SIM_WAIT_TIMEOUT	6000000