FreeCalypso > hg > freecalypso-tools

annotate target-utils/buzplayer/main.c @ 965:2969032bdfac

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fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Sep 2023 07:33:51 +0000
parents 9092ff68e37d
children
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5bbba2cab6f3 target-utils: buzplayer started
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1 #include "types.h"
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2 #include "melody.h"
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3
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4 extern char _end[];
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6 struct melentry *melody_buf_start, *melody_buf_tailptr;
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9092ff68e37d buzplayer: implement PWT mode melody entry
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7 int melody_mode;
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9 main()
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10 {
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11 uart_select_init();
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12 printf("FreeCalypso buzzer player running\n");
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13 print_boot_rom_info();
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14 *(volatile u16 *)0xfffe4806 = 0xFFF3; /* enable ARMIO clock */
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15 timer_init();
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16 melody_buf_start = (struct melentry *) _end;
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17 melody_buf_tailptr = melody_buf_start;
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18 for (;;) {
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19 putchar('=');
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20 if (command_entry())
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21 command_dispatch();
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22 }
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23 }