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Add hw tia to trigger a new Timing Interval Acquisition

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This commit is contained in:
Philippe Teuwen 2019-10-15 14:21:26 +02:00
commit 3fce47d023
8 changed files with 109 additions and 39 deletions
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19
armsrc/appmain.c
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@ -11,6 +11,7 @@
//-----------------------------------------------------------------------------
#include "appmain.h"
#include "clocks.h"
#include "usb_cdc.h"
#include "proxmark3_arm.h"
#include "dbprint.h"
@ -303,6 +304,14 @@ void SendVersion(void) {
reply_ng(CMD_VERSION, PM3_SUCCESS, (uint8_t *)&payload, 12 + payload.versionstr_len);
}
void TimingIntervalAcquisition(void) {
// trigger new acquisition by turning main oscillator off and on
mck_from_pll_to_slck();
mck_from_slck_to_pll(false);
// wait for MCFR and recompute RTMR scaler
StartTickCount();
}
// measure the Connection Speed by sending SpeedTestBufferSize bytes to client and measuring the elapsed time.
// Note: this mimics GetFromBigbuf(), i.e. we have the overhead of the PacketCommandNG structure included.
void printConnSpeed(void) {
@ -1889,6 +1898,16 @@ static void PacketReceived(PacketCommandNG *packet) {
SendStatus();
break;
}
case CMD_TIA: {
uint16_t mainf = AT91C_BASE_PMC->PMC_MCFR & AT91C_CKGR_MAINF;
Dbprintf(" Slow clock old measured value:.........%d Hz", (16 * MAINCK) / mainf);
TimingIntervalAcquisition();
mainf = AT91C_BASE_PMC->PMC_MCFR & AT91C_CKGR_MAINF;
Dbprintf(""); // first message gets lost
Dbprintf(" Slow clock new measured value:.........%d Hz", (16 * MAINCK) / mainf);
reply_ng(CMD_TIA, PM3_SUCCESS, NULL, 0);
break;
}
case CMD_STANDALONE: {
RunMod();
break;