make: fix build-deps, and avr-objdump -d build/src/hello.elf

build/src/hello.elf: file format elf32-avr


Disassembly of section .text:

00000000 <__vectors>:
0: 0c 94 34 00 jmp 0x68 ; 0x68 <__ctors_end>
4: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
8: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
c: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
10: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
14: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
18: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
1c: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
20: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
24: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
28: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
2c: 0c 94 58 00 jmp 0xb0 ; 0xb0 <__vector_11>
30: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
34: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
38: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
3c: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
40: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
44: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
48: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
4c: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
50: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
54: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
58: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
5c: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
60: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>
64: 0c 94 3e 00 jmp 0x7c ; 0x7c <__bad_interrupt>

00000068 <__ctors_end>:
68: 11 24 eor r1, r1
6a: 1f be out 0x3f, r1 ; 63
6c: cf ef ldi r28, 0xFF ; 255
6e: d8 e0 ldi r29, 0x08 ; 8
70: de bf out 0x3e, r29 ; 62
72: cd bf out 0x3d, r28 ; 61
74: 0e 94 90 00 call 0x120 ; 0x120 <main>
78: 0c 94 a3 00 jmp 0x146 ; 0x146 <_exit>

0000007c <__bad_interrupt>:
7c: 0c 94 00 00 jmp 0 ; 0x0 <__vectors>

00000080 <timer_init>:
80: 10 92 80 00 sts 0x0080, r1
84: 88 e0 ldi r24, 0x08 ; 8
86: 80 93 81 00 sts 0x0081, r24
8a: 10 92 82 00 sts 0x0082, r1
8e: 08 95 ret

00000090 <timer1_start>:
90: 10 92 85 00 sts 0x0085, r1
94: 10 92 84 00 sts 0x0084, r1
98: 90 93 89 00 sts 0x0089, r25
9c: 80 93 88 00 sts 0x0088, r24
a0: f1 9a sbi 0x1e, 1 ; 30
a2: 82 e0 ldi r24, 0x02 ; 2
a4: 80 93 6f 00 sts 0x006F, r24
a8: 8d e0 ldi r24, 0x0D ; 13
aa: 80 93 81 00 sts 0x0081, r24
ae: 08 95 ret

000000b0 <__vector_11>:
b0: 1f 92 push r1
b2: 0f 92 push r0
b4: 0f b6 in r0, 0x3f ; 63
b6: 0f 92 push r0
b8: 11 24 eor r1, r1
ba: 10 92 81 00 sts 0x0081, r1
be: f1 98 cbi 0x1e, 1 ; 30
c0: 0f 90 pop r0
c2: 0f be out 0x3f, r0 ; 63
c4: 0f 90 pop r0
c6: 1f 90 pop r1
c8: 18 95 reti

000000ca <timer_sleep>:
ca: 0e 94 48 00 call 0x90 ; 0x90 <timer1_start>
ce: 81 e0 ldi r24, 0x01 ; 1
d0: 83 bf out 0x33, r24 ; 51
d2: 01 c0 rjmp .+2 ; 0xd6 <timer_sleep+0xc>
d4: 88 95 sleep
d6: 8e b3 in r24, 0x1e ; 30
d8: 81 fd sbrc r24, 1
da: fc cf rjmp .-8 ; 0xd4 <timer_sleep+0xa>
dc: 13 be out 0x33, r1 ; 51
de: 08 95 ret

000000e0 <serial_init>:
e0: 10 92 c0 00 sts 0x00C0, r1
e4: 10 92 c1 00 sts 0x00C1, r1
e8: 86 e0 ldi r24, 0x06 ; 6
ea: 80 93 c2 00 sts 0x00C2, r24
ee: 87 e6 ldi r24, 0x67 ; 103
f0: 90 e0 ldi r25, 0x00 ; 0
f2: 90 93 c5 00 sts 0x00C5, r25
f6: 80 93 c4 00 sts 0x00C4, r24
fa: 08 95 ret

000000fc <serial_enable>:
fc: 88 e1 ldi r24, 0x18 ; 24
fe: 80 93 c1 00 sts 0x00C1, r24
102: 08 95 ret

00000104 <serial_read>:
104: 80 91 c0 00 lds r24, 0x00C0
108: 87 ff sbrs r24, 7
10a: fc cf rjmp .-8 ; 0x104 <serial_read>
10c: 80 91 c6 00 lds r24, 0x00C6
110: 08 95 ret

00000112 <serial_write>:
112: 90 91 c0 00 lds r25, 0x00C0
116: 95 ff sbrs r25, 5
118: fc cf rjmp .-8 ; 0x112 <serial_write>
11a: 80 93 c6 00 sts 0x00C6, r24
11e: 08 95 ret

00000120 <main>:
120: 1f 93 push r17
122: 0e 94 40 00 call 0x80 ; 0x80 <timer_init>
126: 0e 94 70 00 call 0xe0 ; 0xe0 <serial_init>
12a: 25 9a sbi 0x04, 5 ; 4
12c: 0e 94 7e 00 call 0xfc ; 0xfc <serial_enable>
130: 78 94 sei
132: 88 e5 ldi r24, 0x58 ; 88
134: 10 e2 ldi r17, 0x20 ; 32
136: 0e 94 89 00 call 0x112 ; 0x112 <serial_write>
13a: 85 b1 in r24, 0x05 ; 5
13c: 81 27 eor r24, r17
13e: 85 b9 out 0x05, r24 ; 5
140: 0e 94 82 00 call 0x104 ; 0x104 <serial_read>
144: f8 cf rjmp .-16 ; 0x136 <main+0x16>

00000146 <_exit>:
146: f8 94 cli

00000148 <__stop_program>:
148: ff cf rjmp .-2 ; 0x148 <__stop_program>

     1

;;

     2

;; Driving 7-segment LED displays over SPI

     3

;;

     4

     5

; Output Enable control

     6

.equ LED7_DDR    = DDRB

     7

.equ LED7_PORT   = PORTB

     8

.equ LED7_OE     = PORTB1                ; Output Enable (Low)

     9

    10

; Font for 7-segment display

    11

; Includes decimal digits 0-9, hexadecimal digits A-F, and some special chars

    12

LED7_Font:

    13

.db     0b00111111, 0b00000110      ; 0, 1

    14

.db     0b01011011, 0b01001111      ; 2, 3

    15

.db     0b01100110, 0b01101101      ; 4, 5

    16

.db     0b01111101, 0b00000111      ; 6, 7

    17

.db     0b01111111, 0b01100111      ; 8, 9

    18

.db     0b01110111, 0b01111100      ; A, b

    19

.db     0b00111001, 0b01011110      ; C, d

    20

.db     0b01111001, 0b01110001      ; E, f

    21

.db     0b10000000, 0b00000000      ; ., 

    22

    23

.equ LED7_0     = 0

    24

.equ LED7_1     = 1

    25

.equ LED7_2     = 2

    26

.equ LED7_3     = 3

    27

.equ LED7_4     = 4

    28

.equ LED7_5     = 5

    29

.equ LED7_6     = 6

    30

.equ LED7_7     = 7

    31

.equ LED7_8     = 8

    32

.equ LED7_9     = 9

    33

.equ LED7_A     = 10

    34

.equ LED7_B     = 11

    35

.equ LED7_C     = 12

    36

.equ LED7_D     = 13

    37

.equ LED7_E     = 14

    38

.equ LED7_F     = 15

    39

.equ LED7_DOT   = 16

    40

.equ LED7_EMPTY = 17

    41

    42

; LEDs are on beginning of SPI universe

    43

.set led7_buffer = spi_outbuf + 0

    44

    45

;; Initialize LCD to empty, and enable

    46

LED7_Init:

    47

    ; Setup ENable port

    48

        sbi         LED7_PORT, LED7_OE    ; Disabled (Low)

    49

        sbi         LED7_DDR, LED7_OE     ; Out

    50

    51

    ; Initialize buffer

    52

        ldi         r16, 0b01000000

    53

        sts         led7_buffer + 0, r16

    54

        sts         led7_buffer + 1, r16

    55

    56

    ; Update display

    57

        rcall       SPI_SendRecv

    58

    59

    ; Enable output once the initial display has been shifted out

    60

        cbi         LED7_PORT, LED7_OE

    61

    62

    ; Done

    63

        ret

    64

    65

LED7_LoadChar:

    66

        clr         r0, 0

    67

    68

    ; Prep address

    69

        ; base addr for font table

    70

        ldi         ZH, high(2 * LED7_Font)

    71

        ldi         ZL, low(2 * LED7_Font)

    72

    73

        ; offset

    74

        add         ZL, r8

    75

        adc         ZH, r0

    76

    77

    ; Load char

    78

        lpm         r8, Z

    79

    80

    ; Done

    81

        ret

    82

    83

;; Display an 8-bit hexadecimal value on the display

    84

;;  Input: r16

    85

LED7_ShowHex:

    86

        ; base16

    87

        ldi         r17, 16 

    88

    89

        ; 1's

    90

        call        div8u

    91

    92

        ; r16 = result, r15 = remainder

    93

        mov         r17, r15 

    94

    95

    ; Continue

    96

        rjmp        LED7_Show

    97

    98

;; Display an 8-bit decimal value on the display

    99

;;  Input: r16

   100

LED7_ShowDec:

   101

        ; base10

   102

        ldi         r17, 10

   103

   104

        ; 1's

   105

        call        div8u

   106

        mov         r8, r15

   107

   108

        ; 10's

   109

        call        div8u

   110

        mov         r9, r16         ; 100's

   111

   112

        ; 1's from r8

   113

        rcall       LED7_LoadChar

   114

        mov         r17, r8

   115

   116

        ; 10's from r15

   117

        mov         r8, r15

   118

        rcall       LED7_LoadChar

   119

        mov         r16, r8

   120

   121

        ; Set dots for 100's 

   122

        sbrc        r9, 0

   123

        ori         r17, 0b10000000 ; +100

   124

        sbrc        r9, 1

   125

        ori         r16, 0b10000000 ; +200

   126

   127

    ; Continue

   128

        rjmp        LED7_ShowRaw

   129

   130

;; Display a single digit on the display

   131

;;  Input: r16, r17

   132

LED7_Show:

   133

        mov         r8, r16

   134

        rcall       LED7_LoadChar

   135

        mov         r16, r8

   136

   137

        mov         r8, r17

   138

        rcall       LED7_LoadChar

   139

        mov         r17, r8

   140

   141

    ;; Continue

   142

   143

;; Display a raw segment mask

   144

;;  Input: r16, r17

   145

LED7_ShowRaw:

   146

    ; Store buffer

   147

        sts         led7_buffer + 0, r16

   148

        sts         led7_buffer + 1, r17

   149

   150

    ; Update display

   151

        rjmp        SPI_Update

   152