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-rw-r--r--digital/ucoolib/ucoolib/hal/spi/test/test_spi.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/digital/ucoolib/ucoolib/hal/spi/test/test_spi.cc b/digital/ucoolib/ucoolib/hal/spi/test/test_spi.cc
index 4814f921..6e229fd3 100644
--- a/digital/ucoolib/ucoolib/hal/spi/test/test_spi.cc
+++ b/digital/ucoolib/ucoolib/hal/spi/test/test_spi.cc
@@ -98,7 +98,7 @@ main (int argc, const char **argv)
case 'o':
case 'f':
{
- char cmd[] = { 0x20, c == 'o' ? 0x47 : 0x07 };
+ char cmd[] = { 0x20, (char) (c == 'o' ? 0x47 : 0x07) };
ss.reset ();
spi.send (cmd, sizeof (cmd));
ss.set ();