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firmata_mraa.c: retry counter should not be decremented past 0

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This means the retry counter works appropriately in case of failure. Closes #574

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
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Brendan Le Foll
2016-09-02 11:48:51 +01:00
parent 9bc91f4b12
commit bf2a504774
1 changed files with 1 additions and 1 deletions
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2
src/firmata/firmata_mraa.c
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@@ -537,7 +537,7 @@ mraa_firmata_plat_init(const char* uart_dev)
// if this isn't working then we have an issue with our uart // if this isn't working then we have an issue with our uart
int retry = 20; int retry = 20;
while (!firmata_dev->isReady && retry--) { while (!firmata_dev->isReady && --retry) {
firmata_pull(firmata_dev); firmata_pull(firmata_dev);
} }