Subject:
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Re: Play tunes with legOS: "Wir sind die Roboter"
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Tue, 30 Nov 1999 02:23:53 GMT
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Viewed:
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3923 times
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Cool. There is something quite appropriate about using a lego to play
Kraftwerk :)
-Luis
On Tue, 30 Nov 1999, Martin Cornelius wrote:
> Date: Tue, 30 Nov 1999 01:42:27 GMT
> From: Martin Cornelius <Martin.Cornelius@t-online.de>
> To: lugnet.robotics.rcx.legos@lugnet.com
> Subject: Play tunes with legOS: "Wir sind die Roboter"
>
> well, yesterday i promised to post some header file that makes it easy
> to program the sound timer for playing tunes in a memory saving way -
> here it is.
> ( see below, file notedefs.h )
>
> the numbering scheme is N_<key>[m]_<number_of_octave>
>
> N_A_0 corresponds to a quite low A-key, 55 Hz
> N_A_8 is 8 octaves up, 14080 Hz
>
> m, if present, denotes the ebony keys, e.g. N_Cm_3 is the ebony key just
> right of the 3rd C-key (somewhere in the middle of the keyboard).
>
> To play the desired key, put the MSB of the macro into the compare Match
> register, put the 2 LSbits into CKS1/0 and set ICKS0 to one if bit7 is
> set.
>
> if that sounds confusing, below is a little application that plays "Wir
> sind die Roboter", a somewhat wellknown song composed in the 70ies by
> the german band KRAFTWERK. ( see below, file robots.c ).
>
> The actual definition of the melody is in array robots[], consuming 36
> Bytes of RAM 8-).
>
> -------------- snip < file notedefs.h > snip --------
> // some handy macros for tunes
>
> #ifndef NOTEDEFS_H
> #define NOTEDEFS_H
>
> #define N_A_0 0x8d03
> #define N_Am_0 0x8503
> #define N_H_0 0x7e03
> #define N_C_0 0x7603
> #define N_Cm_0 0x7003
> #define N_D_0 0x6903
> #define N_Dm_0 0x6303
> #define N_E_0 0x5e03
> #define N_F_0 0x5803
> #define N_Fm_0 0x5303
> #define N_G_0 0x4f03
> #define N_Gm_0 0x4a03
> #define N_A_1 0x4603
> #define N_Am_1 0x4203
> #define N_H_1 0x3e03
> #define N_C_1 0x3b03
> #define N_Cm_1 0x3703
> #define N_D_1 0x3403
> #define N_Dm_1 0x3103
> #define N_E_1 0x2e03
> #define N_F_1 0x2c03
> #define N_Fm_1 0x2903
> #define N_G_1 0x2703
> #define N_Gm_1 0xf683
> #define N_A_2 0xe883
> #define N_Am_2 0xdb83
> #define N_H_2 0xcf83
> #define N_C_2 0xc383
> #define N_Cm_2 0xb883
> #define N_D_2 0xae83
> #define N_Dm_2 0xa483
> #define N_E_2 0x9b83
> #define N_F_2 0x9283
> #define N_Fm_2 0x8a83
> #define N_G_2 0x8283
> #define N_Gm_2 0x7a83
> #define N_A_3 0x7483
> #define N_Am_3 0x6d83
> #define N_H_3 0xfc02
> #define N_C_3 0xee02
> #define N_Cm_3 0xe002
> #define N_D_3 0xd402
> #define N_Dm_3 0xc802
> #define N_E_3 0xbd02
> #define N_F_3 0xb202
> #define N_Fm_3 0xa802
> #define N_G_3 0x9e02
> #define N_Gm_3 0x9502
> #define N_A_4 0x8d02
> #define N_Am_4 0x8502
> #define N_H_4 0xfc82
> #define N_C_4 0xee82
> #define N_Cm_4 0xe082
> #define N_D_4 0xd482
> #define N_Dm_4 0xc882
> #define N_E_4 0xbd82
> #define N_F_4 0xb282
> #define N_Fm_4 0xa882
> #define N_G_4 0x9e82
> #define N_Gm_4 0x9582
> #define N_A_5 0x8d82
> #define N_Am_5 0x8582
> #define N_H_5 0x7e82
> #define N_C_5 0x7682
> #define N_Cm_5 0x7082
> #define N_D_5 0x6982
> #define N_Dm_5 0x6382
> #define N_E_5 0x5e82
> #define N_F_5 0x5882
> #define N_Fm_5 0x5382
> #define N_G_5 0x4f82
> #define N_Gm_5 0x4a82
> #define N_A_6 0x4682
> #define N_Am_6 0x4282
> #define N_H_6 0xfc01
> #define N_C_6 0xee01
> #define N_Cm_6 0xe001
> #define N_D_6 0xd401
> #define N_Dm_6 0xc801
> #define N_E_6 0xbd01
> #define N_F_6 0xb201
> #define N_Fm_6 0xa801
> #define N_G_6 0x9e01
> #define N_Gm_6 0x9501
> #define N_A_7 0x8d01
> #define N_Am_7 0x8501
> #define N_H_7 0x7e01
> #define N_C_7 0x7601
> #define N_Cm_7 0x7001
> #define N_D_7 0x6901
> #define N_Dm_7 0x6301
> #define N_E_7 0x5e01
> #define N_F_7 0x5801
> #define N_Fm_7 0x5301
> #define N_G_7 0x4f01
> #define N_Gm_7 0x4a01
> #define N_A_8 0x4601
>
> #endif
> -------------- snip snip ----------------------------
>
> -------------- snip < file robots.c > snip ----------
> // play "wir sind die roboter"
>
> #include <sys/h8.h>
> #include <unistd.h>
>
> #include "notedefs.h"
>
> void playNote(unsigned note)
> {
> unsigned char CKSmask = note & 0xff;
> unsigned char match = note >> 8;
>
> // start timer
> T0_CR = 0x00; // timer off
> T0_CNT = 0x00; // counter reset
> if (CKSmask & 0x80)
> STCR |= 0x01; // ICKS0 = 1
> else
> STCR &= ~0x01; // ICKS0 = 0
> T0_CORA = match; // set compare match A
> T0_CSR = CSR_TOGGLE_ON_A; // Output toggles on compare Match A
> T0_CR = CR_CLEAR_ON_A | (CKSmask &0x3); // Go
> }
>
> void quiet()
> {
> T0_CR = 0x00; // timer 0 off
> }
>
> typedef struct tone
> {
> unsigned note;
> unsigned char len;
> } tone;
>
> void playTone( tone* t , unsigned msecs)
> {
> unsigned duration = t->len*msecs;
> unsigned ptime = duration * 13 /16;
>
> playNote(t->note);
> msleep(ptime);
> quiet();
> msleep(duration-ptime);
> }
>
> tone robots[] =
> {
> { N_D_3, 2 } , { N_C_3, 1 } , { N_D_3, 1 },
> { N_F_3, 1 } , { N_D_3, 1 } , { N_D_3, 2 },
> { N_F_3, 2 } , { N_G_3, 1 } , { N_C_4, 1 },
> { N_A_4, 2 } , { N_D_3, 2 } ,
> { 0, 0 }
> };
>
> void playMelody(tone *melody,unsigned msecs)
> {
> while ( melody->note )
> {
> playTone(melody,msecs);
> ++melody;
> }
> }
>
> int main(int argc,char *argv[])
> {
> while (1)
> playMelody(robots,200);
>
> return 0;
> }
> -------------- snip snip ----------------------------
>
>
#######################################################################
Profanity is the one language that all programmers understand.
-Anonymous
#######################################################################
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Message is in Reply To:
 | | Play tunes with legOS: "Wir sind die Roboter"
|
| well, yesterday i promised to post some header file that makes it easy to program the sound timer for playing tunes in a memory saving way - here it is. ( see below, file notedefs.h ) the numbering scheme is N_<key>[m]_<number_of_octave> N_A_0 (...) (27 years ago, 30-Nov-99, to lugnet.robotics.rcx.legos)
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