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comparison target-utils/simagent/byterx.c @ 783:c136a1a2474b

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simagent: initial implementation of APDU exchange
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 13 Mar 2021 22:06:08 +0000
parents badc5399d641
children
comparison
equal deleted inserted replaced
782:badc5399d641 783:c136a1a2474b
1 #include <stdlib.h> 1 #include <stdlib.h>
2 #include "types.h" 2 #include "types.h"
3 #include "simregs.h" 3 #include "simregs.h"
4 #include "timeout.h"
4 5
5 rx_sim_byte(count) 6 rx_sim_byte(count)
6 unsigned count; 7 unsigned count;
7 { 8 {
8 for (; count; count--) { 9 for (; count; count--) {
9 if (!(SIMREGS.stat & SIM_STAT_FEMPTY)) 10 if (!(SIMREGS.stat & SIM_STAT_FEMPTY))
10 return SIMREGS.drx; 11 return SIMREGS.drx;
11 } 12 }
13 return(-1);
14 }
15
16 rx_sim_byte_hl()
17 {
18 int rc;
19 unsigned parcnt;
20
21 for (parcnt = 0; parcnt < 3; parcnt++) {
22 rc = rx_sim_byte(SIM_WAIT_TIMEOUT);
23 if (rc < 0) {
24 printf("ERROR: timeout waiting for SIM response\n");
25 return(-1);
26 }
27 if (rc & 0x100)
28 return rc & 0xFF;
29 }
30 printf("ERROR: received bad parity 3 times in a row\n");
12 return(-1); 31 return(-1);
13 } 32 }
14 33
15 flush_rx_fifo() 34 flush_rx_fifo()
16 { 35 {