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always try to consume all of the data in retrieve

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This commit is contained in:
cTn 2014-01-28 04:02:47 +01:00
parent 35d66ed4c3
commit 6ee1982050
1 changed files with 3 additions and 2 deletions
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5
js/stm32.js
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@ -188,6 +188,7 @@ STM32_protocol.prototype.read = function(readInfo) {
}
};
// we should always try to consume all "proper" available data while using retrieve
STM32_protocol.prototype.retrieve = function(n_bytes, callback) {
if (this.receive_buffer.length >= n_bytes) {
// data that we need are there, process immediately
@ -367,7 +368,7 @@ STM32_protocol.prototype.upload_procedure = function(step) {
// get version of the bootloader and supported commands
self.send([self.command.get, 0xFF], 2, function(data) { // 0x00 ^ 0xFF
if (self.verify_response(self.status.ACK, data)) {
self.retrieve(data[1], function(data) { // data[1] = number of bytes that will follow [– 1 except current and ACKs]
self.retrieve(data[1] + 1 + 1, function(data) { // data[1] = number of bytes that will follow [– 1 except current and ACKs]
console.log('STM32 - Bootloader version: ' + (parseInt(data[0].toString(16)) / 10).toFixed(1)); // convert dec to hex, hex to dec and add floating point
// proceed to next step
@ -380,7 +381,7 @@ STM32_protocol.prototype.upload_procedure = function(step) {
// get ID (device signature)
self.send([self.command.get_ID, 0xFD], 2, function(data) { // 0x01 ^ 0xFF
if (self.verify_response(self.status.ACK, data)) {
self.retrieve(data[1] + 1, function(data) { // data[1] = number of bytes that will follow [– 1 (N = 1 for STM32), except for current byte and ACKs]
self.retrieve(data[1] + 1 + 1, function(data) { // data[1] = number of bytes that will follow [– 1 (N = 1 for STM32), except for current byte and ACKs]
var signature = (data[0] << 8) | data[1];
console.log('STM32 - Signature: 0x' + signature.toString(16)); // signature in hex representation