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using emulator memory for sim and restore

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tharexde 2020-10-31 01:49:46 +01:00
commit 902b52ab02
1 changed files with 23 additions and 20 deletions
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43
armsrc/em4x50.c
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@ -122,6 +122,22 @@ static void em4x50_setup_sim(void) {
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
}
static void emlGetMem(uint32_t *words, size_t nowords) {
// read <nowords> words from emulator memory
uint8_t *em4x50_mem = BigBuf_get_EM_addr();
for (int i = 0; i < EM4X50_NO_WORDS; i++) {
for (int j = 0; j < 4; j++)
words[i] |= (em4x50_mem[4 * i + j]) << ((3 - j) * 8);
// lsb is needed (given format is msb)
words[i] = reflect32(words[i]);
}
}
// functions for "reader" use case
static bool get_signalproperties(void) {
@ -1336,15 +1352,8 @@ void em4x50_restore(em4x50_data_t *etd) {
em4x50_setup_read();
// read data
for (int i = 0; i < EM4X50_NO_WORDS; i++) {
for (int j = 0; j < 4; j++)
words_client[i] |= (etd->data[4 * i + j]) << ((3 - j) * 8);
// lsb is needed (dump is msb)
words_client[i] = reflect32(words_client[i]);
}
// read data from emulator memory
emlGetMem(words_client, EM4X50_NO_WORDS);
// set gHigh and gLow
if (get_signalproperties() && find_em4x50_tag()) {
@ -1389,23 +1398,17 @@ void em4x50_restore(em4x50_data_t *etd) {
reply_ng(CMD_LF_EM4X50_RESTORE, status, 0, 0);
}
void em4x50_sim(em4x50_data_t *etd) {
void em4x50_sim(void) {
// simulate either word (e.g. UID) or complete tag via dump file upload
// simulate uploaded data in emulator memory
// (currently only a one-way communication is possible)
uint32_t words[EM4X50_NO_WORDS] = {0x0};
em4x50_setup_sim();
// read data
for (int i = 0; i < EM4X50_NO_WORDS; i++) {
for (int j = 0; j < 4; j++)
words[i] |= (etd->data[4 * i + j]) << ((3 - j) * 8);
// lsb is needed (dump is msb)
words[i] = reflect32(words[i]);
}
// read data from emulator memory
emlGetMem(words, EM4X50_NO_WORDS);
// extract control data
int fwr = words[CONFIG_BLOCK] & 0xFF; // first word read