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FPC: got RX working, got client over usart somehow working..., see detailed commit msg

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* using WITH_FPC:
  * activate basic usart
  * no double buffer for now, no interrupt
  * usart_dataavailable/usart_readbuffer/usart_writebuffer, to demo it:
    * pm3 client over USB, minicom over usart
    * analyse a d 414243
* using WITH_FPC_HOST:
  * it implies WITH_FPC as it's based on it
  * control pm3 with client over usart
  * EXPERIMENTAL! still some frame desync issues
  * you can connect both from usart & USB with two pm3 clients
    * actually you *have* to connect USB for the moment because
      it's used to send debug messages about buggy usart... See Dbprintf_usb below
  * "sessions": msgs are directed to the latest client to have sent a cmd
  * Dbprintf_usb macro to send msgs to USB client to help debugging usart...
  * We now have an option to run client at different speed as usart is 115200:
    client/proxmark3 /dev/ttyUSB0 -b 115200
  * Consequently, argc,argv handling is a bit revamped, it was so messy...
  * USB and flashing are still at 460800, don't try flashing over usart yet ^^
This commit is contained in:
Philippe Teuwen 2019-04-02 22:06:10 +02:00
commit 21be6d4400
15 changed files with 174 additions and 84 deletions
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29
armsrc/appmain.c
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@ -632,7 +632,6 @@ void ListenReaderField(int limit) {
void UsbPacketReceived(uint8_t *packet, int len) {
UsbCommand *c = (UsbCommand *)packet;
//Dbprintf("received %d bytes, with command: 0x%04x and args: %d %d %d", len, c->cmd, c->arg[0], c->arg[1], c->arg[2]);
switch (c->cmd) {
@ -1106,8 +1105,12 @@ void UsbPacketReceived(uint8_t *packet, int len) {
char dest[USB_CMD_DATA_SIZE]={'\0'};
sprintf(dest, usart_dataavailable() ? "DATA!\r\n" : "no data\r\n");
cmd_send(CMD_DEBUG_PRINT_STRING, strlen(dest), 0, 0, dest, strlen(dest));
if (usart_dataavailable()) {
Dbprintf("RX DATA!");
uint16_t len = usart_readbuffer((uint8_t*)dest);
dest[len] = '\0';
Dbprintf("RX: %d | %02X %02X %02X %02X %02X %02X %02X %02X ", len, dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]);
}
static const char *welcome = "Proxmark3 Serial interface via FPC ready\r\n";
usart_writebuffer((uint8_t *)welcome, strlen(welcome));
@ -1126,9 +1129,6 @@ void UsbPacketReceived(uint8_t *packet, int len) {
//usb
cmd_send(CMD_DEBUG_PRINT_STRING, strlen(dest), 0, 0, dest, strlen(dest));
sprintf(dest, usart_dataavailable() ? "DATA!\r\n" : "no data\r\n");
cmd_send(CMD_DEBUG_PRINT_STRING, strlen(dest), 0, 0, dest, strlen(dest));
LED_A_OFF();
/*
uint8_t my_rx[sizeof(UsbCommand)];
@ -1560,16 +1560,17 @@ void __attribute__((noreturn)) AppMain(void) {
// Check if there is a usb packet available
if (usb_poll_validate_length()) {
if (usb_read(rx, sizeof(rx)))
#ifdef WITH_FPC_HOST
reply_via_fpc = 0;
#endif
UsbPacketReceived(rx, sizeof(rx));
}
#ifdef WITH_FPC
// Check is there is FPC package available
/*
usart_init();
if (usart_readbuffer(rx, sizeof(rx)) )
UsbPacketReceived(rx, sizeof(rx) );
*/
#ifdef WITH_FPC_HOST
// Check if there is a FPC packet available
if (usart_readcommand(rx) > 0) {
reply_via_fpc = 1;
UsbPacketReceived(rx, sizeof(rx));
}
#endif
// Press button for one second to enter a possible standalone mode