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uart: fix remaining bytes computation

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This commit is contained in:
Romuald Conty 2011-02-15 18:06:24 +00:00
parent e110a78de7
commit 695dc75037
1 changed files with 3 additions and 2 deletions
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5
libnfc/buses/uart_posix.c
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@ -216,6 +216,7 @@ uart_receive (serial_port sp, byte_t * pbtRx, size_t * pszRx)
fd_set rfds;
int iExpectedByteCount = (int)*pszRx;
DBG ("iExpectedByteCount == %d", iExpectedByteCount);
struct timeval tvTimeout = {
.tv_sec = 0,
.tv_usec = uiTimeoutStatic + (uiTimeoutPerByte * iExpectedByteCount),
@ -253,7 +254,7 @@ uart_receive (serial_port sp, byte_t * pbtRx, size_t * pszRx)
}
// There is something available, read the data
res = read (((serial_port_unix *) sp)->fd, pbtRx + (*pszRx), MIN(byteCount, iExpectedByteCount));
iExpectedByteCount -= byteCount;
iExpectedByteCount -= MIN (byteCount, iExpectedByteCount);
// Stop if the OS has some troubles reading the data
if (res <= 0) {
@ -265,7 +266,7 @@ uart_receive (serial_port sp, byte_t * pbtRx, size_t * pszRx)
tv.tv_usec = uiTimeoutPerByte * MIN( iExpectedByteCount, 16 );
// DBG("Timeout reloaded at: %d µs", tv.tv_usec);
} while (byteCount && (iExpectedByteCount > 0));
DBG ("byteCount == %d, iExpectedByteCount == %d", byteCount, iExpectedByteCount);
return 0;
}