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add WiFiClient::write_P to be used with PROGMEM

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This commit is contained in:
Martin Ayotte
2015-08-22 00:25:28 -04:00
parent b28e879af6
commit e89ae46a6b
2 changed files with 40 additions and 5 deletions
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32
libraries/ESP8266WiFi/src/WiFiClient.cpp
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@ -177,6 +177,38 @@ size_t WiFiClient::write(const uint8_t *buf, size_t size)
return _client->write(reinterpret_cast<const char*>(buf), size);
}
size_t WiFiClient::write_P(PGM_P buf, size_t size)
{
if (!_client || !size)
{
return 0;
}
char chunkUnit[WIFICLIENT_MAX_PACKET_SIZE + 1];
chunkUnit[WIFICLIENT_MAX_PACKET_SIZE] = '\0';
while (buf != NULL)
{
size_t chunkUnitLen;
PGM_P chunkNext;
chunkNext = (PGM_P)memccpy_P((void*)chunkUnit, (PGM_VOID_P)buf, 0, WIFICLIENT_MAX_PACKET_SIZE);
if (chunkNext == NULL)
{
// no terminator, more data available
buf += WIFICLIENT_MAX_PACKET_SIZE;
chunkUnitLen = WIFICLIENT_MAX_PACKET_SIZE;
}
else
{
// reached terminator
chunkUnitLen = chunkNext - buf;
buf = NULL;
}
if (size < WIFICLIENT_MAX_PACKET_SIZE) chunkUnitLen = size;
_client->write((const char*)chunkUnit, chunkUnitLen);
}
return size;
}
int WiFiClient::available()
{
if (!_client)