add simple TSL2591 illuminance / IR sensor driver

1 files changed, 38 insertions, 0 deletions

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;