HAL_ChibiOS: fixed integer promotion bug in SoftSigReaderInt

this caused corrupted PPM values. Many thanks to Andrea Belloni for reporting
7 years ago · f75dea34e1
1 changed files with 2 additions and 2 deletions
--- a/libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp
+++ b/libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp
@ -62,8 +62,8 @@ bool SoftSigReaderInt::read(uint32_t &widths0, uint32_t &widths1)
				@@ -62,8 +62,8 @@ bool SoftSigReaderInt::read(uint32_t &widths0, uint32_t &widths1)
    uint16_t p0, p1;
    if (sigbuf.available() >= 2) {
        if (sigbuf.pop(p0)&&sigbuf.pop(p1)) {
-            widths0 = p0 - last_value;
-            widths1 = p1 - p0;
+            widths0 = uint16_t(p0 - last_value);
+            widths1 = uint16_t(p1 - p0);
            last_value = p1;
            return true;
        }