0000004a <btohex>:
4a: 8a 30 cpi r24, 0x0A ; 10
4c: 10 f0 brcs .+4 ; 0x52
4e: 89 5c subi r24, 0xC9 ; 201
50: 01 c0 rjmp .+2 ; 0x54
52: 80 5d subi r24, 0xD0 ; 208
54: 99 27 eor r25, r25
56: 87 fd sbrc r24, 7
58: 90 95 com r25
5a: 08 95 ret
0000005c <atohex>:
5c: ef 92 push r14
5e: ff 92 push r15
60: 1f 93 push r17
62: 18 2f mov r17, r24
64: e6 2e mov r14, r22
66: f7 2e mov r15, r23
68: 8f 70 andi r24, 0x0F ; 15
6a: ef df rcall .-34 ; 0x4a
6c: ff 2d mov r31, r15
6e: ee 2d mov r30, r14
70: 81 83 std Z+1, r24 ; 0x01
72: 12 95 swap r17
74: 1f 70 andi r17, 0x0F ; 15
76: 81 2f mov r24, r17
78: e8 df rcall .-48 ; 0x4a
7a: ff 2d mov r31, r15
7c: ee 2d mov r30, r14
7e: 80 83 st Z, r24
80: 1f 91 pop r17
82: ff 90 pop r15
84: ef 90 pop r14
86: 08 95 ret