diff --git a/src/energenie/drv/hrf69.c b/src/energenie/drv/hrf69.c
index 3c032bd..ea138ac 100644
--- a/src/energenie/drv/hrf69.c
+++ b/src/energenie/drv/hrf69.c
@@ -5,8 +5,7 @@
 
 #include "system.h"
 #include "hrf69.h"
-
-//import spi
+#include "spi.h"
 
 //def warning(msg):
 //    print("warning:" + str(msg))
@@ -34,17 +33,16 @@
 //    spi.deselect()
 }
 
-
+// Read an 8 bit value from a register
 uint8_t HRF_readreg(uint8_t addr)
 {
-//def HRF_readreg(addr):
-//    """Read an 8 bit value from a register"""
-//    buf = [addr, 0x00]
-//    spi.select()
-//    res = spi.frame(buf)
-//    spi.deselect()
-//    return res[1] # all registers are 8 bit
-    return 0; // TODO
+    uint8_t result;
+
+    spi_select();
+    spi_byte(addr);
+    result = spi_byte(0x00);
+    spi_deselect();
+    return result;
 }
 
 
diff --git a/src/energenie/drv/hrf69_test.c b/src/energenie/drv/hrf69_test.c
index 508a093..b45f1f2 100644
--- a/src/energenie/drv/hrf69_test.c
+++ b/src/energenie/drv/hrf69_test.c
@@ -69,6 +69,9 @@
 }
 
 
+extern void gpio_mock_set_in(uint8_t g, uint8_t v);
+
+
 void hrf_test_connect(void)
 {
   uint8_t result;
@@ -76,8 +79,11 @@
   // can we reset the HRF, and read a register from it?
 
   reset();
+  gpio_mock_set_in(MISO, 1); // force return bus high to test
+
+
   result = HRF_readreg(0x00);
-  printf("result:%02X", (unsigned int) result);
+  printf("result:0x%02X\n", (unsigned int) result);
 
   spi_finished();
 }