Diff: main.cpp

Revision:

0:8e0901b4cd75

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue May 15 11:59:47 2018 +0000
@@ -0,0 +1,38 @@
+#include "mbed.h"
+#include <stdint.h>
+
+I2C i2c(PB_9, PB_8);
+Serial usb_serial(SERIAL_TX, SERIAL_RX);
+
+#define ADDR_FSR0 0x90
+#define ADDR_FSR1 0x29
+#define ADDR_PZT 0x96
+
+#define AD1115_CONFIG 0x01
+
+#define PZT0 0x10
+#define PZT1 0x20
+
+int main() {
+    int16_t raw_data, config;
+    double voltage0, voltage1;
+    usb_serial.baud(230400);
+    i2c.frequency(200000);
+    char rxbuf[10];
+    char txbuf[10];
+        // set mux to pzt0
+        config = 0x84E3 | PZT0;
+        txbuf[0] = AD1115_CONFIG;
+        txbuf[1] = config >> 8;
+        txbuf[2] = config & 0xFF;
+        i2c.write(ADDR_PZT, txbuf, 3);
+        txbuf[0] = 0;
+        i2c.write(ADDR_PZT, txbuf, 1);
+    while(1) {
+        i2c.read(ADDR_PZT, rxbuf, 2);
+        raw_data = (rxbuf[0] << 8) | rxbuf[1];
+        voltage0 = 5.0/65535.0 * (double)raw_data;
+        usb_serial.printf("%f\r\n", voltage0);
+        wait_ms(1);
+    }
+}