From 9a3d3bcc93f8cefea74af2a86b5834a57738e2c3 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Thu, 25 Feb 2021 23:09:34 +0100
Subject: add simple TSL2591 illuminance / IR sensor driver

---
 src/driver/tsl2591.cc | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/driver/tsl2591.cc

(limited to 'src/driver')

diff --git a/src/driver/tsl2591.cc b/src/driver/tsl2591.cc
new file mode 100644
index 0000000..6356477
--- /dev/null
+++ b/src/driver/tsl2591.cc
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2020 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#include "driver/tsl2591.h"
+#if defined(MULTIPASS_ARCH_HAS_I2C) && !defined(DRIVER_SOFTI2C)
+#include "driver/i2c.h"
+#else
+#include "driver/soft_i2c.h"
+#endif
+
+void TSL2591::init()
+{
+	txbuf[0] = 0xa0;
+	txbuf[1] = 0x03;
+	i2c.xmit(address, 2, txbuf, 0, rxbuf);
+	txbuf[0] = 0xa1;
+	txbuf[1] = 0x01; // 200ms integration time
+	i2c.xmit(address, 2, txbuf, 0, rxbuf);
+}
+
+void TSL2591::read()
+{
+	txbuf[0] = 0xb4;
+	i2c.xmit(address, 1, txbuf, 4, rxbuf);
+	ch0 = (rxbuf[1] << 8) + rxbuf[0];
+	ch1 = (rxbuf[3] << 8) + rxbuf[2];
+}
+
+unsigned char TSL2591::getStatus()
+{
+	txbuf[0] = 0xb3;
+	i2c.xmit(address, 1, txbuf, 1, rxbuf);
+	return rxbuf[0];
+}
+
+TSL2591 tsl2591;
-- 
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