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Bridge: Added File I/O

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This commit is contained in:
Cristian Maglie
2013-06-07 17:39:03 +02:00
parent 3e4419d6be
commit 37da7c8294
4 changed files with 140 additions and 58 deletions
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47
hardware/arduino/avr/libraries/Bridge/Bridge.cpp
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@@ -101,6 +101,53 @@ void BridgeClass::writeCommandInput(uint8_t handle,
transfer(cmd, 2, buff, size, NULL, 0);
}
uint8_t BridgeClass::fileOpen(String &file, uint8_t mode, uint8_t &err) {
uint8_t cmd[] = {'F', mode};
uint8_t res[2];
transfer(cmd, 2, (uint8_t*)file.c_str(), file.length(), res, 2);
err = res[0];
return res[1];
}
void BridgeClass::fileClose(uint8_t handle) {
uint8_t cmd[] = {'f', handle};
transfer(cmd, 2);
}
unsigned int BridgeClass::fileRead(uint8_t handle, uint8_t *buff, unsigned int size, uint8_t &err) {
uint8_t s = size > 255 ? 255 : size-1;
uint8_t cmd[] = {'G', handle, s};
uint8_t l = transfer(cmd, 3, buff, size) - 1;
err = buff[0]; // First byte is error code
if (l>0) {
// Shift the reminder of buffer
for (uint8_t i=0; i<l; i++)
buff[i] = buff[i+1];
}
return l;
}
void BridgeClass::fileWrite(uint8_t handle, const uint8_t *buff, unsigned int size, uint8_t &err) {
uint8_t cmd[] = {'g', handle};
uint8_t res[1];
transfer(cmd, 2, buff, size, res, 1);
err = res[0];
}
void BridgeClass::fileSeek(uint8_t handle, uint32_t position, uint8_t &err) {
uint8_t cmd[] = {
's',
handle,
(position >> 24) & 0xFF,
(position >> 16) & 0xFF,
(position >> 8) & 0xFF,
position & 0xFF
};
uint8_t res[1];
transfer(cmd, 6, res, 1);
err = res[0];
}
unsigned int BridgeClass::readMessage(uint8_t *buff, unsigned int size) {
uint8_t tmp[] = { 'm' };
return transfer(tmp, 1, buff, size);