1 files changed, 105 insertions, 0 deletions
diff --git a/meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/post_led.sh b/meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/post_led.sh
new file mode 100644
index 0000000..c23349f
--- /dev/null
+++ b/meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/post_led.sh
@@ -0,0 +1,105 @@
+#!/bin/sh
+#
+# Copyright 2004-present Facebook. All rights reserved.
+#
+# This program file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program in a file named COPYING; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301 USA
+#
+
+usage() {
+    echo "Displays values onto the debug header LEDs."
+    echo "Hex and decimal accepted."
+    echo "Usage: $0 <value>"
+}
+
+. /usr/local/fbpackages/utils/ast-functions
+
+# Function to set the less significant hex digit
+display_lower() {  
+    local bit0=$(expr $1 % 2)
+    local bit1=$(expr $1 / 2 % 2)
+    local bit2=$(expr $1 / 4 % 2)
+    local bit3=$(expr $1 / 8 % 2)
+    
+    # Set the pins to the correct operating mode.
+    # The relevant pins are GPIOG[0...3].
+    # For GPIO bank G, SCU84[0..3] must be 0.
+    devmem_clear_bit $(scu_addr 84) 0
+    devmem_clear_bit $(scu_addr 84) 1
+    devmem_clear_bit $(scu_addr 84) 2
+    devmem_clear_bit $(scu_addr 84) 3
+
+    # Now set the GPIOs to the right binary values
+    gpio_set 48 $bit0
+    gpio_set 49 $bit1
+    gpio_set 50 $bit2
+    gpio_set 51 $bit3
+}
+
+# Function to set the more significant hex digit
+display_upper() {
+    local bit0=$(expr $1 % 2)
+    local bit1=$(expr $1 / 2 % 2)
+    local bit2=$(expr $1 / 4 % 2)
+    local bit3=$(expr $1 / 8 % 2)
+
+    # Set the pins to the correct operating mode.
+    # The relevant pins are GPIOB[4...7].
+    # GPIOB4: SCU80[12] = 0 and Strap[14] = 0
+    # GPIOB5: SCU80[13] = 0
+    # GPIOB6: SCU80[14] = 0
+    # GPIOB7: SCU80[15] = 0
+    devmem_clear_bit $(scu_addr 70) 14
+    devmem_clear_bit $(scu_addr 80) 12
+    devmem_clear_bit $(scu_addr 80) 13
+    devmem_clear_bit $(scu_addr 80) 14
+    devmem_clear_bit $(scu_addr 80) 15
+
+    gpio_set 12 $bit0
+    gpio_set 13 $bit1
+    gpio_set 14 $bit2
+    gpio_set 15 $bit3
+}
+
+# Check number of parameters
+if [ $# -ne 1 ]
+then
+    usage
+    exit 1
+fi
+
+# Make sure input is actually numeric
+DEC_VALUE=$(printf "%d" $1 2>/dev/null)
+if [ $? -eq 1 ]
+then
+    echo "Unable to parse input as numeric value."
+    exit 1
+fi
+
+# Make sure input is within proper range
+if [ $DEC_VALUE -lt 0 ] || [ $DEC_VALUE -gt 255 ]
+then
+    echo "Value $DEC_VALUE is outside of displayable range 0 - 0xff (255)."
+    exit 1
+fi
+
+# Get upper/lower decimal values
+LOWER_DEC_VALUE=$(expr $DEC_VALUE % 16)
+UPPER_DEC_VALUE=$(expr $DEC_VALUE / 16)
+
+# Display the results
+display_lower $LOWER_DEC_VALUE
+display_upper $UPPER_DEC_VALUE
+