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Improved Bridge memory usage. Fixed bug affecting buffers with more than 255 bytes

This commit is contained in:
Cristian Maglie 2013-06-05 12:58:21 +02:00
parent 590ead58ad
commit 4c0f864f90
1 changed files with 13 additions and 28 deletions
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41
hardware/arduino/avr/libraries/Bridge/Bridge.cpp
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@ -55,10 +55,9 @@ void BridgeClass::begin() {
}
uint8_t BridgeClass::runCommand(String &command) {
// TODO: do it in a more efficient way
String cmd = "R" + command;
uint8_t cmd[] = {'R'};
uint8_t res[1];
transfer((uint8_t*)cmd.c_str(), cmd.length(), res, 1);
transfer(cmd, 1, (uint8_t*)command.c_str(), command.length(), res, 1);
return res[0];
}
@ -98,13 +97,8 @@ unsigned int BridgeClass::readCommandOutput(uint8_t handle,
void BridgeClass::writeCommandInput(uint8_t handle,
const uint8_t *buff, unsigned int size) {
// TODO: do it in a more efficient way
uint8_t *tmp = new uint8_t[size+2];
tmp[0] = 'I';
tmp[1] = handle;
memcpy(tmp+2, buff, size);
transfer(tmp, size+2);
delete[] tmp;
uint8_t cmd[] = {'I', handle};
transfer(cmd, 2, buff, size, NULL, 0);
}
unsigned int BridgeClass::readMessage(uint8_t *buff, unsigned int size) {
@ -113,16 +107,12 @@ unsigned int BridgeClass::readMessage(uint8_t *buff, unsigned int size) {
}
void BridgeClass::writeMessage(const uint8_t *buff, unsigned int size) {
// TODO: do it in a more efficient way
uint8_t *tmp = new uint8_t[size+1];
tmp[0] = 'M';
memcpy(tmp+1, buff, size);
transfer(tmp, size+1);
delete[] tmp;
uint8_t cmd[] = {'M'};
transfer(cmd, 1, buff, size, NULL, 0);
}
unsigned int BridgeClass::messageAvailable() {
uint8_t tmp[] = { 'n' };
uint8_t tmp[] = {'n'};
uint8_t res[2];
transfer(tmp, 1, res, 2);
return (res[0] << 8) + res[1];
@ -138,15 +128,10 @@ void BridgeClass::put(const char *key, const char *value) {
}
unsigned int BridgeClass::get(const char *key, uint8_t *value, unsigned int maxlen) {
// TODO: do it in a more efficient way
unsigned int l = strlen(key);
uint8_t *tmp = new uint8_t[l+1];
tmp[0] = 'd';
memcpy(tmp+1, key, strlen(key));
l = transfer(tmp, l+1, value, maxlen);
if (l<maxlen)
uint8_t cmd[] = {'d'};
unsigned int l = transfer(cmd, 1, (uint8_t *)key, strlen(key), value, maxlen);
if (l < maxlen)
value[l] = 0; // Zero-terminate string
delete[] tmp;
return l;
}
@ -185,15 +170,15 @@ uint8_t BridgeClass::transfer(const uint8_t *buff1, uint16_t len1,
crcUpdate((len >> 8) & 0xFF);
write((char)(len & 0xFF)); // Message length (lo)
crcUpdate(len & 0xFF);
for (uint8_t i=0; i<len1; i++) { // Payload
for (uint16_t i=0; i<len1; i++) { // Payload
write((char)buff1[i]);
crcUpdate(buff1[i]);
}
for (uint8_t i=0; i<len2; i++) { // Payload
for (uint16_t i=0; i<len2; i++) { // Payload
write((char)buff2[i]);
crcUpdate(buff2[i]);
}
for (uint8_t i=0; i<len3; i++) { // Payload
for (uint16_t i=0; i<len3; i++) { // Payload
write((char)buff3[i]);
crcUpdate(buff3[i]);
}