temperature: add a fake temperature-set to show how to use it

We have three temperatures, called "roof", "core", "case" (yess rubi like word same lengt, s/he most love four). There is a "faketemp" command that can set one two or all of them. This allows to test negative temperatures in printouts (White Rabbit in Siberia does it, but we southish can't test easily). All temperatures are initialized to invalid. Example: wrc# faketemp -10 -2.5 wrc# faketemp fff60000 fffd8003 80000000 wrc# temp pcb:84.7500 roof:-10.0000 core:-2.4999 case:INVALID Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

temperature: add a fake temperature-set to show how to use it
We have three temperatures, called "roof", "core", "case" (yess rubi like word same lengt, s/he most love four). There is a "faketemp" command that can set one two or all of them. This allows to test negative temperatures in printouts (White Rabbit in Siberia does it, but we southish can't test easily). All temperatures are initialized to invalid. Example: wrc# faketemp -10 -2.5 wrc# faketemp fff60000 fffd8003 80000000 wrc# temp pcb:84.7500 roof:-10.0000 core:-2.4999 case:INVALID Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
c58702a0 · Alessandro Rubini · a661eeed · c58702a0 · c58702a0 · c58702a0
Commit c58702a0 authored Feb 19, 2016 by Alessandro Rubini
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Kconfig Kconfig +7 -0

dev.mk dev/dev.mk +2 -0

fake-temp.c dev/fake-temp.c +65 -0

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--- a/Kconfig
+++ b/Kconfig
@@ -332,6 +332,13 @@ config WRC_VERBOSE
 	help
 	  This enables some more diagnostic messages. Normally off.

+config FAKE_TEMPERATURES
+	depends on DEVELOPER
+	boolean "Offer an array of 3 fake temperatures, for testing"
+	help
+	  The option adds also a "faketemp" command, used to set
+	  the fake temperatures: e.g. "faketemp 120 -10 50"
+
 config VLAN
 	depends on DEVELOPER
 	boolean "Filter and rx/tx frames in a VLAN (as opposed to untagged)"

--- a/dev/dev.mk
+++ b/dev/dev.mk
@@ -22,6 +22,8 @@ obj-$(CONFIG_W1) +=		dev/temp-w1.o
 obj-$(CONFIG_UART) +=		dev/uart.o
 obj-$(CONFIG_UART_SW) +=	dev/uart-sw.o

+obj-$(CONFIG_FAKE_TEMPERATURES) += dev/fake-temp.o
+
 # Filter rules are selected according to configuration, but we may
 # have more than one. Note: the filename is reflected in symbol names,
 # so they are hardwired in ../Makefile (and ../tools/pfilter-builder too)

--- a/dev/fake-temp.c
+++ b/dev/fake-temp.c
+/*
+ * This work is part of the White Rabbit project
+ *
+ * Copyright (C) 2016 GSI (www.gsi.de)
+ * Author: Alessandro rubini
+ *
+ * Released according to the GNU GPL, version 2 or any later version.
+ */
+#include <wrc.h>
+#include <temperature.h>
+#include <shell.h>
+
+static struct wrc_onetemp temp_fake_data[] = {
+	{"roof", TEMP_INVALID},
+	{"core", TEMP_INVALID},
+	{"case", TEMP_INVALID},
+	{NULL,}
+};
+
+static int temp_fake_refresh(struct wrc_temp *t)
+{
+	/* nothing to do */
+	return 0;
+}
+
+/* not static at this point, because it's the only one */
+DEFINE_TEMPERATURE(w1) = {
+	.read = temp_fake_refresh,
+	.t = temp_fake_data,
+};
+
+
+static int cmd_faketemp(const char *args[])
+{
+	int i;
+	const char *dot;
+
+	if (!args[0]) {
+		pp_printf("%08x %08x %08x\n", temp_fake_data[0].t,
+			  temp_fake_data[1].t, temp_fake_data[2].t);
+		return 0;
+	}
+
+	for (i = 0; i < 3 && args[i]; i++) {
+		int sign = 1, val;
+
+		/* accept negative, and at most one decimal */
+		if (args[i][0] == '-')
+			sign = -1, args[i]++;
+		dot = fromdec(args[i], &val);
+		val <<= 16;
+		if (dot[0] == '.' && dot[1] >= '0' && dot[1] <= '9')
+			val += 0x10000 / 10 * (dot[1] - '0');
+		temp_fake_data[i].t = val * sign;
+	}
+	return 0;
+}
+
+
+DEFINE_WRC_COMMAND(faketemp) = {
+	.name = "faketemp",
+	.exec = cmd_faketemp,
+};
+
+