From 3eb20ea675fc9100d494473154a82ba9604de653 Mon Sep 17 00:00:00 2001
From: Rafael Zurita <rafaelignacio.zurita@gmail.com>
Date: Mon, 3 Aug 2020 10:24:52 -0300
Subject: [PATCH] gpio

---
 apps/shell/xsh_gpio.c      | 40 ++++++++++++++++++++++++++++++++++++++
 lib/{gpio.c => avr_gpio.c} |  0
 main/xsh_gpio.c            |  6 +++---
 3 files changed, 43 insertions(+), 3 deletions(-)
 create mode 100644 apps/shell/xsh_gpio.c
 rename lib/{gpio.c => avr_gpio.c} (100%)

diff --git a/apps/shell/xsh_gpio.c b/apps/shell/xsh_gpio.c
new file mode 100644
index 0000000..d51dfcb
--- /dev/null
+++ b/apps/shell/xsh_gpio.c
@@ -0,0 +1,40 @@
+/* xsh_gpio.c - xsh_gpio */
+
+#include <xinu.h>
+#include <stdio.h>
+
+/*------------------------------------------------------------------------
+ * xsh_gpio - write a value v in port p
+ *------------------------------------------------------------------------
+ *
+ * Two modes:
+ * Normal mode. Example: gpio b 32		# arduino pin 13 high
+ * Extra Arduino mode. Example: gpio 13 1	# arduino pin 13 high
+ */
+shellcmd xsh_gpio(int nargs, char *args[])
+{
+	char p;
+	unsigned char v;
+
+	char pin;
+	unsigned char val;
+
+
+	/* Normal mode. Example: gpio b 32	# arduino pin 13 high */
+
+	p = *args[1];
+	v = number(args[2]);
+
+	if ((p == 'b') | (p == 'c') | (p == 'd')) {
+		gpio_write(p, v);
+		return 0;
+	}
+
+	/* Extra arduino mode. Example: gpio 13 1 # arduino pin 13 high */
+
+	pin = number(args[1]);
+	gpio_arduino_write(pin, v);
+
+	return 0;
+}
+
diff --git a/lib/gpio.c b/lib/avr_gpio.c
similarity index 100%
rename from lib/gpio.c
rename to lib/avr_gpio.c
diff --git a/main/xsh_gpio.c b/main/xsh_gpio.c
index 9660430..d51dfcb 100644
--- a/main/xsh_gpio.c
+++ b/main/xsh_gpio.c
@@ -7,8 +7,9 @@
  * xsh_gpio - write a value v in port p
  *------------------------------------------------------------------------
  *
- * Extra Arduino mode. Example: 
- *         gpio 13 1	# arduino pin 13 high
+ * Two modes:
+ * Normal mode. Example: gpio b 32		# arduino pin 13 high
+ * Extra Arduino mode. Example: gpio 13 1	# arduino pin 13 high
  */
 shellcmd xsh_gpio(int nargs, char *args[])
 {
@@ -37,4 +38,3 @@ shellcmd xsh_gpio(int nargs, char *args[])
 	return 0;
 }
 
-