From b0f73aa8d989d6d44f695ab64612482b102889c1 Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Fri, 30 Oct 2020 08:18:38 +0100
Subject: [PATCH] ftdipp_mpsse: add method to configure individually pins
 direction

---
 src/ftdipp_mpsse.cpp | 26 ++++++++++++++++++++++++++
 src/ftdipp_mpsse.hpp |  3 +++
 2 files changed, 29 insertions(+)

diff --git a/src/ftdipp_mpsse.cpp b/src/ftdipp_mpsse.cpp
index c5a1c88..0cf2f38 100644
--- a/src/ftdipp_mpsse.cpp
+++ b/src/ftdipp_mpsse.cpp
@@ -479,6 +479,32 @@ void FTDIpp_MPSSE::gpio_set_dir(uint16_t dir)
 	_cable.bit_high_dir = (dir >> 8) & 0xff;
 }
 
+/**
+ * configure low or high pins as input
+ * @param[in] gpio: pins bitmask
+ * @param[int] low_pins: select between CBUS or DBUS
+ */
+void FTDIpp_MPSSE::gpio_set_input(uint16_t gpio, bool low_pins)
+{
+	if (low_pins)
+		_cable.bit_low_dir &= ~gpio;
+	else
+		_cable.bit_high_dir &= ~gpio;
+}
+
+/**
+ * configure low or high pins as output
+ * @param[in] gpio: pins bitmask
+ * @param[int] low_pins: select between CBUS or DBUS
+ */
+void FTDIpp_MPSSE::gpio_set_output(uint16_t gpio, bool low_pins)
+{
+	if (low_pins)
+		_cable.bit_low_dir |= gpio;
+	else
+		_cable.bit_high_dir |= gpio;
+}
+
 /**
  * private method to write ftdi half bank GPIOs (pins state are in _cable)
  * @param[in] low or high half bank
diff --git a/src/ftdipp_mpsse.hpp b/src/ftdipp_mpsse.hpp
index 90cdad9..4dc8633 100644
--- a/src/ftdipp_mpsse.hpp
+++ b/src/ftdipp_mpsse.hpp
@@ -39,8 +39,11 @@ class FTDIpp_MPSSE {
 		/* full access */
 		bool gpio_write(uint16_t gpio);
 		bool gpio_write(uint8_t gpio, bool low_pins);
+		/* gpio direction */
 		void gpio_set_dir(uint8_t dir, bool low_pins);
 		void gpio_set_dir(uint16_t dir);
+		void gpio_set_input(uint16_t gpio, bool low_pins);
+		void gpio_set_output(uint16_t gpio, bool low_pins);
 
 	protected:
 		void open_device(const std::string &serial, unsigned int baudrate);