Here is a small example for how to use the PIC32MZ I2S master.
My code, generate 100Hz, 1KHz, 10KHz, 20KHz, out to I2S, at 180kbps, 24bit.
The I2S must be connected to a 24bit I2S DAC.
For test, I used EasyPic Fusion V7, PIC32MZEFH144, with the folowing config:
Clock form external on board 24MHz OSC, divide by 4, multiply with 63 and PLL divide with 2, final clock 189MHz.
PORTB L, leds must be ON, RG0 switch to down, RG0 button to change the freq.
Enjoy!
Code: Select all
program I2S_Generator;
const sin_table_const_100hz : array[1800] of longint = (
0x800000,0x807261,0x80e4c3,0x815723,0x81c983,0x823be1,0x82ae3d,0x832097,
0x8392ef,0x840544,0x847796,0x84e9e4,0x855c2e,0x85ce74,0x8640b5,0x86b2f1,
0x872528,0x879759,0x880985,0x887ba9,0x88edc7,0x895fde,0x89d1ed,0x8a43f5,
0x8ab5f4,0x8b27eb,0x8b99d9,0x8c0bbd,0x8c7d98,0x8cef69,0x8d6130,0x8dd2ec,
0x8e449d,0x8eb642,0x8f27dc,0x8f996a,0x900aeb,0x907c5f,0x90edc6,0x915f20,
0x91d06c,0x9241aa,0x92b2d9,0x9323f9,0x93950a,0x94060b,0x9476fc,0x94e7dd,
0x9558ad,0x95c96c,0x963a1a,0x96aab6,0x971b40,0x978bb7,0x97fc1c,0x986c6d,
0x98dcab,0x994cd5,0x99bceb,0x9a2ced,0x9a9cd9,0x9b0cb0,0x9b7c72,0x9bec1e,
0x9c5bb3,0x9ccb32,0x9d3a99,0x9da9ea,0x9e1922,0x9e8843,0x9ef74b,0x9f663b,
0x9fd511,0xa043ce,0xa0b272,0xa120fb,0xa18f6a,0xa1fdbe,0xa26bf6,0xa2da14,
0xa34815,0xa3b5fa,0xa423c3,0xa4916f,0xa4fefe,0xa56c6f,0xa5d9c2,0xa646f7,
0xa6b40e,0xa72105,0xa78dde,0xa7fa97,0xa8672f,0xa8d3a8,0xa94000,0xa9ac37,
0xaa184d,0xaa8441,0xaaf013,0xab5bc3,0xabc750,0xac32bb,0xac9e02,0xad0925,
0xad7424,0xaddf00,0xae49b6,0xaeb448,0xaf1eb4,0xaf88fb,0xaff31b,0xb05d16,
0xb0c6e9,0xb13096,0xb19a1c,0xb2037a,0xb26cb0,0xb2d5bd,0xb33ea2,0xb3a75f,
0xb40ff2,0xb4785b,0xb4e09a,0xb548b0,0xb5b09a,0xb6185a,0xb67fef,0xb6e758,
0xb74e95,0xb7b5a6,0xb81c8b,0xb88343,0xb8e9cd,0xb9502b,0xb9b65a,0xba1c5c,
0xba822f,0xbae7d3,0xbb4d48,0xbbb28e,0xbc17a4,0xbc7c8a,0xbce140,0xbd45c6,
0xbdaa1a,0xbe0e3d,0xbe722f,0xbed5ee,0xbf397c,0xbf9cd7,0xbfffff,0xc062f4,
0xc0c5b6,0xc12844,0xc18a9e,0xc1ecc4,0xc24eb5,0xc2b071,0xc311f8,0xc37349,
0xc3d464,0xc43549,0xc495f8,0xc4f670,0xc556b1,0xc5b6bb,0xc6168c,0xc67626,
0xc6d588,0xc734b1,0xc793a1,0xc7f258,0xc850d6,0xc8af1a,0xc90d24,0xc96af3,
0xc9c888,0xca25e2,0xca8301,0xcadfe4,0xcb3c8b,0xcb98f7,0xcbf526,0xcc5118,
0xccaccd,0xcd0846,0xcd6380,0xcdbe7d,0xce193c,0xce73bc,0xcecdfe,0xcf2801,
0xcf81c4,0xcfdb49,0xd0348d,0xd08d91,0xd0e655,0xd13ed9,0xd1971b,0xd1ef1d,
0xd246dc,0xd29e5b,0xd2f597,0xd34c91,0xd3a348,0xd3f9bd,0xd44fef,0xd4a5dd,
0xd4fb88,0xd550ef,0xd5a612,0xd5faf0,0xd64f8a,0xd6a3de,0xd6f7ee,0xd74bb8,
0xd79f3c,0xd7f27b,0xd84573,0xd89825,0xd8ea90,0xd93cb4,0xd98e91,0xd9e026,
0xda3173,0xda8279,0xdad336,0xdb23ab,0xdb73d6,0xdbc3b9,0xdc1353,0xdc62a3,
0xdcb1a9,0xdd0065,0xdd4ed7,0xdd9cff,0xddeadb,0xde386d,0xde85b4,0xded2ae,
0xdf1f5e,0xdf6bc1,0xdfb7d8,0xe003a3,0xe04f21,0xe09a52,0xe0e536,0xe12fcc,
0xe17a15,0xe1c411,0xe20dbe,0xe2571c,0xe2a02d,0xe2e8ee,0xe33161,0xe37984,
0xe3c158,0xe408dc,0xe45010,0xe496f5,0xe4dd88,0xe523cc,0xe569be,0xe5af60,
0xe5f4b0,0xe639af,0xe67e5d,0xe6c2b8,0xe706c2,0xe74a79,0xe78dde,0xe7d0f0,
0xe813af,0xe8561b,0xe89833,0xe8d9f8,0xe91b6a,0xe95c87,0xe99d51,0xe9ddc6,
0xea1de6,0xea5db2,0xea9d29,0xeadc4b,0xeb1b17,0xeb598e,0xeb97af,0xebd57a,
0xec12ef,0xec500e,0xec8cd6,0xecc948,0xed0562,0xed4126,0xed7c93,0xedb7a8,
0xedf265,0xee2ccb,0xee66d8,0xeea08e,0xeed9eb,0xef12ef,0xef4b9b,0xef83ee,
0xefbbe8,0xeff389,0xf02ad0,0xf061be,0xf09852,0xf0ce8c,0xf1046c,0xf139f2,
0xf16f1d,0xf1a3ee,0xf1d864,0xf20c80,0xf24040,0xf273a4,0xf2a6ae,0xf2d95c,
0xf30bae,0xf33da4,0xf36f3f,0xf3a07d,0xf3d15e,0xf401e4,0xf4320c,0xf461d8,
0xf49147,0xf4c059,0xf4ef0e,0xf51d65,0xf54b5f,0xf578fb,0xf5a639,0xf5d319,
0xf5ff9c,0xf62bc0,0xf65785,0xf682ec,0xf6adf5,0xf6d89f,0xf702ea,0xf72cd5,
0xf75662,0xf77f8f,0xf7a85d,0xf7d0cc,0xf7f8da,0xf82089,0xf847d8,0xf86ec7,
0xf89556,0xf8bb84,0xf8e152,0xf906c0,0xf92bcd,0xf95079,0xf974c4,0xf998ae,
0xf9bc37,0xf9df5f,0xfa0226,0xfa248b,0xfa468f,0xfa6831,0xfa8971,0xfaaa4f,
0xfacacc,0xfaeae6,0xfb0a9f,0xfb29f5,0xfb48e8,0xfb6779,0xfb85a8,0xfba374,
0xfbc0dd,0xfbdde4,0xfbfa87,0xfc16c8,0xfc32a6,0xfc4e20,0xfc6937,0xfc83eb,
0xfc9e3b,0xfcb828,0xfcd1b1,0xfcead6,0xfd0398,0xfd1bf6,0xfd33f0,0xfd4b86,
0xfd62b8,0xfd7986,0xfd8fef,0xfda5f5,0xfdbb96,0xfdd0d2,0xfde5ab,0xfdfa1e,
0xfe0e2d,0xfe21d8,0xfe351d,0xfe47fe,0xfe5a7a,0xfe6c91,0xfe7e44,0xfe8f91,
0xfea079,0xfeb0fc,0xfec11a,0xfed0d2,0xfee026,0xfeef14,0xfefd9c,0xff0bc0,
0xff197d,0xff26d6,0xff33c9,0xff4056,0xff4c7d,0xff583f,0xff639c,0xff6e92,
0xff7923,0xff834e,0xff8d13,0xff9672,0xff9f6c,0xffa7ff,0xffb02d,0xffb7f4,
0xffbf56,0xffc652,0xffcce7,0xffd317,0xffd8e0,0xffde44,0xffe341,0xffe7d8,
0xffec09,0xffefd4,0xfff338,0xfff637,0xfff8cf,0xfffb01,0xfffccd,0xfffe33,
0xffff33,0xffffcc,0xffffff,0xffffcc,0xffff33,0xfffe33,0xfffccd,0xfffb01,
0xfff8cf,0xfff637,0xfff338,0xffefd4,0xffec09,0xffe7d8,0xffe341,0xffde44,
0xffd8e0,0xffd317,0xffcce7,0xffc652,0xffbf56,0xffb7f4,0xffb02d,0xffa7ff,
0xff9f6c,0xff9672,0xff8d13,0xff834e,0xff7923,0xff6e92,0xff639c,0xff583f,
0xff4c7d,0xff4056,0xff33c9,0xff26d6,0xff197d,0xff0bc0,0xfefd9c,0xfeef14,
0xfee026,0xfed0d2,0xfec11a,0xfeb0fc,0xfea079,0xfe8f91,0xfe7e44,0xfe6c91,
0xfe5a7a,0xfe47fe,0xfe351d,0xfe21d8,0xfe0e2d,0xfdfa1e,0xfde5ab,0xfdd0d2,
0xfdbb96,0xfda5f5,0xfd8fef,0xfd7986,0xfd62b8,0xfd4b86,0xfd33f0,0xfd1bf6,
0xfd0398,0xfcead6,0xfcd1b1,0xfcb828,0xfc9e3b,0xfc83eb,0xfc6937,0xfc4e20,
0xfc32a6,0xfc16c8,0xfbfa87,0xfbdde4,0xfbc0dd,0xfba374,0xfb85a8,0xfb6779,
0xfb48e8,0xfb29f5,0xfb0a9f,0xfaeae6,0xfacacc,0xfaaa4f,0xfa8971,0xfa6831,
0xfa468f,0xfa248b,0xfa0226,0xf9df5f,0xf9bc37,0xf998ae,0xf974c4,0xf95079,
0xf92bcd,0xf906c0,0xf8e152,0xf8bb84,0xf89556,0xf86ec7,0xf847d8,0xf82089,
0xf7f8da,0xf7d0cc,0xf7a85d,0xf77f8f,0xf75662,0xf72cd5,0xf702ea,0xf6d89f,
0xf6adf5,0xf682ec,0xf65785,0xf62bc0,0xf5ff9c,0xf5d319,0xf5a639,0xf578fb,
0xf54b5f,0xf51d65,0xf4ef0e,0xf4c059,0xf49147,0xf461d8,0xf4320c,0xf401e4,
0xf3d15e,0xf3a07d,0xf36f3f,0xf33da4,0xf30bae,0xf2d95c,0xf2a6ae,0xf273a4,
0xf24040,0xf20c80,0xf1d864,0xf1a3ee,0xf16f1d,0xf139f2,0xf1046c,0xf0ce8c,
0xf09852,0xf061be,0xf02ad0,0xeff389,0xefbbe8,0xef83ee,0xef4b9b,0xef12ef,
0xeed9eb,0xeea08e,0xee66d8,0xee2ccb,0xedf265,0xedb7a8,0xed7c93,0xed4126,
0xed0562,0xecc948,0xec8cd6,0xec500e,0xec12ef,0xebd57a,0xeb97af,0xeb598e,
0xeb1b17,0xeadc4b,0xea9d29,0xea5db2,0xea1de6,0xe9ddc6,0xe99d51,0xe95c87,
0xe91b6a,0xe8d9f8,0xe89833,0xe8561b,0xe813af,0xe7d0f0,0xe78dde,0xe74a79,
0xe706c2,0xe6c2b8,0xe67e5d,0xe639af,0xe5f4b0,0xe5af60,0xe569be,0xe523cc,
0xe4dd88,0xe496f5,0xe45010,0xe408dc,0xe3c158,0xe37984,0xe33161,0xe2e8ee,
0xe2a02d,0xe2571c,0xe20dbe,0xe1c411,0xe17a15,0xe12fcc,0xe0e536,0xe09a52,
0xe04f21,0xe003a3,0xdfb7d8,0xdf6bc1,0xdf1f5e,0xded2ae,0xde85b4,0xde386d,
0xddeadb,0xdd9cff,0xdd4ed7,0xdd0065,0xdcb1a9,0xdc62a3,0xdc1353,0xdbc3b9,
0xdb73d6,0xdb23ab,0xdad336,0xda8279,0xda3173,0xd9e026,0xd98e91,0xd93cb4,
0xd8ea90,0xd89825,0xd84573,0xd7f27b,0xd79f3c,0xd74bb8,0xd6f7ee,0xd6a3de,
0xd64f8a,0xd5faf0,0xd5a612,0xd550ef,0xd4fb88,0xd4a5dd,0xd44fef,0xd3f9bd,
0xd3a348,0xd34c91,0xd2f597,0xd29e5b,0xd246dc,0xd1ef1d,0xd1971b,0xd13ed9,
0xd0e655,0xd08d91,0xd0348d,0xcfdb49,0xcf81c4,0xcf2801,0xcecdfe,0xce73bc,
0xce193c,0xcdbe7d,0xcd6380,0xcd0846,0xccaccd,0xcc5118,0xcbf526,0xcb98f7,
0xcb3c8b,0xcadfe4,0xca8301,0xca25e2,0xc9c888,0xc96af3,0xc90d24,0xc8af1a,
0xc850d6,0xc7f258,0xc793a1,0xc734b1,0xc6d588,0xc67626,0xc6168c,0xc5b6bb,
0xc556b1,0xc4f670,0xc495f8,0xc43549,0xc3d464,0xc37349,0xc311f8,0xc2b071,
0xc24eb5,0xc1ecc4,0xc18a9e,0xc12844,0xc0c5b6,0xc062f4,0xbfffff,0xbf9cd7,
0xbf397c,0xbed5ee,0xbe722f,0xbe0e3d,0xbdaa1a,0xbd45c6,0xbce140,0xbc7c8a,
0xbc17a4,0xbbb28e,0xbb4d48,0xbae7d3,0xba822f,0xba1c5c,0xb9b65a,0xb9502b,
0xb8e9cd,0xb88343,0xb81c8b,0xb7b5a6,0xb74e95,0xb6e758,0xb67fef,0xb6185a,
0xb5b09a,0xb548b0,0xb4e09a,0xb4785b,0xb40ff2,0xb3a75f,0xb33ea2,0xb2d5bd,
0xb26cb0,0xb2037a,0xb19a1c,0xb13096,0xb0c6e9,0xb05d16,0xaff31b,0xaf88fb,
0xaf1eb4,0xaeb448,0xae49b6,0xaddf00,0xad7424,0xad0925,0xac9e02,0xac32bb,
0xabc750,0xab5bc3,0xaaf013,0xaa8441,0xaa184d,0xa9ac37,0xa94000,0xa8d3a8,
0xa8672f,0xa7fa97,0xa78dde,0xa72105,0xa6b40e,0xa646f7,0xa5d9c2,0xa56c6f,
0xa4fefe,0xa4916f,0xa423c3,0xa3b5fa,0xa34815,0xa2da14,0xa26bf6,0xa1fdbe,
0xa18f6a,0xa120fb,0xa0b272,0xa043ce,0x9fd511,0x9f663b,0x9ef74b,0x9e8843,
0x9e1922,0x9da9ea,0x9d3a99,0x9ccb32,0x9c5bb3,0x9bec1e,0x9b7c72,0x9b0cb0,
0x9a9cd9,0x9a2ced,0x99bceb,0x994cd5,0x98dcab,0x986c6d,0x97fc1c,0x978bb7,
0x971b40,0x96aab6,0x963a1a,0x95c96c,0x9558ad,0x94e7dd,0x9476fc,0x94060b,
0x93950a,0x9323f9,0x92b2d9,0x9241aa,0x91d06c,0x915f20,0x90edc6,0x907c5f,
0x900aeb,0x8f996a,0x8f27dc,0x8eb642,0x8e449d,0x8dd2ec,0x8d6130,0x8cef69,
0x8c7d98,0x8c0bbd,0x8b99d9,0x8b27eb,0x8ab5f4,0x8a43f5,0x89d1ed,0x895fde,
0x88edc7,0x887ba9,0x880985,0x879759,0x872528,0x86b2f1,0x8640b5,0x85ce74,
0x855c2e,0x84e9e4,0x847796,0x840544,0x8392ef,0x832097,0x82ae3d,0x823be1,
0x81c983,0x815723,0x80e4c3,0x807261,0x800000,0x7f8d9e,0x7f1b3c,0x7ea8dc,
0x7e367c,0x7dc41e,0x7d51c2,0x7cdf68,0x7c6d10,0x7bfabb,0x7b8869,0x7b161b,
0x7aa3d1,0x7a318b,0x79bf4a,0x794d0e,0x78dad7,0x7868a6,0x77f67a,0x778456,
0x771238,0x76a021,0x762e12,0x75bc0a,0x754a0b,0x74d814,0x746626,0x73f442,
0x738267,0x731096,0x729ecf,0x722d13,0x71bb62,0x7149bd,0x70d823,0x706695,
0x6ff514,0x6f83a0,0x6f1239,0x6ea0df,0x6e2f93,0x6dbe55,0x6d4d26,0x6cdc06,
0x6c6af5,0x6bf9f4,0x6b8903,0x6b1822,0x6aa752,0x6a3693,0x69c5e5,0x695549,
0x68e4bf,0x687448,0x6803e3,0x679392,0x672354,0x66b32a,0x664314,0x65d312,
0x656326,0x64f34f,0x64838d,0x6413e1,0x63a44c,0x6334cd,0x62c566,0x625615,
0x61e6dd,0x6177bc,0x6108b4,0x6099c4,0x602aee,0x5fbc31,0x5f4d8d,0x5edf04,
0x5e7095,0x5e0241,0x5d9409,0x5d25eb,0x5cb7ea,0x5c4a05,0x5bdc3c,0x5b6e90,
0x5b0101,0x5a9390,0x5a263d,0x59b908,0x594bf1,0x58defa,0x587221,0x580568,
0x5798d0,0x572c57,0x56bfff,0x5653c8,0x55e7b2,0x557bbe,0x550fec,0x54a43c,
0x5438af,0x53cd44,0x5361fd,0x52f6da,0x528bdb,0x5220ff,0x51b649,0x514bb7,
0x50e14b,0x507704,0x500ce4,0x4fa2e9,0x4f3916,0x4ecf69,0x4e65e3,0x4dfc85,
0x4d934f,0x4d2a42,0x4cc15d,0x4c58a0,0x4bf00d,0x4b87a4,0x4b1f65,0x4ab74f,
0x4a4f65,0x49e7a5,0x498010,0x4918a7,0x48b16a,0x484a59,0x47e374,0x477cbc,
0x471632,0x46afd4,0x4649a5,0x45e3a3,0x457dd0,0x45182c,0x44b2b7,0x444d71,
0x43e85b,0x438375,0x431ebf,0x42ba39,0x4255e5,0x41f1c2,0x418dd0,0x412a11,
0x40c683,0x406328,0x400000,0x3f9d0b,0x3f3a49,0x3ed7bb,0x3e7561,0x3e133b,
0x3db14a,0x3d4f8e,0x3cee07,0x3c8cb6,0x3c2b9b,0x3bcab6,0x3b6a07,0x3b098f,
0x3aa94e,0x3a4944,0x39e973,0x3989d9,0x392a77,0x38cb4e,0x386c5e,0x380da7,
0x37af29,0x3750e5,0x36f2db,0x36950c,0x363777,0x35da1d,0x357cfe,0x35201b,
0x34c374,0x346708,0x340ad9,0x33aee7,0x335332,0x32f7b9,0x329c7f,0x324182,
0x31e6c3,0x318c43,0x313201,0x30d7fe,0x307e3b,0x3024b6,0x2fcb72,0x2f726e,
0x2f19aa,0x2ec126,0x2e68e4,0x2e10e2,0x2db923,0x2d61a4,0x2d0a68,0x2cb36e,
0x2c5cb7,0x2c0642,0x2bb010,0x2b5a22,0x2b0477,0x2aaf10,0x2a59ed,0x2a050f,
0x29b075,0x295c21,0x290811,0x28b447,0x2860c3,0x280d84,0x27ba8c,0x2767da,
0x27156f,0x26c34b,0x26716e,0x261fd9,0x25ce8c,0x257d86,0x252cc9,0x24dc54,
0x248c29,0x243c46,0x23ecac,0x239d5c,0x234e56,0x22ff9a,0x22b128,0x226300,
0x221524,0x21c792,0x217a4b,0x212d51,0x20e0a1,0x20943e,0x204827,0x1ffc5c,
0x1fb0de,0x1f65ad,0x1f1ac9,0x1ed033,0x1e85ea,0x1e3bee,0x1df241,0x1da8e3,
0x1d5fd2,0x1d1711,0x1cce9e,0x1c867b,0x1c3ea7,0x1bf723,0x1bafef,0x1b690a,
0x1b2277,0x1adc33,0x1a9641,0x1a509f,0x1a0b4f,0x19c650,0x1981a2,0x193d47,
0x18f93d,0x18b586,0x187221,0x182f0f,0x17ec50,0x17a9e4,0x1767cc,0x172607,
0x16e495,0x16a378,0x1662ae,0x162239,0x15e219,0x15a24d,0x1562d6,0x1523b4,
0x14e4e8,0x14a671,0x146850,0x142a85,0x13ed10,0x13aff1,0x137329,0x1336b7,
0x12fa9d,0x12bed9,0x12836c,0x124857,0x120d9a,0x11d334,0x119927,0x115f71,
0x112614,0x10ed10,0x10b464,0x107c11,0x104417,0x100c76,0xfd52f,0xf9e41,
0xf67ad,0xf3173,0xefb93,0xec60d,0xe90e2,0xe5c11,0xe279b,0xdf37f,
0xdbfbf,0xd8c5b,0xd5951,0xd26a3,0xcf451,0xcc25b,0xc90c0,0xc5f82,
0xc2ea1,0xbfe1b,0xbcdf3,0xb9e27,0xb6eb8,0xb3fa6,0xb10f1,0xae29a,
0xab4a0,0xa8704,0xa59c6,0xa2ce6,0xa0063,0x9d43f,0x9a87a,0x97d13,
0x9520a,0x92760,0x8fd15,0x8d32a,0x8a99d,0x88070,0x857a2,0x82f33,
0x80725,0x7df76,0x7b827,0x79138,0x76aa9,0x7447b,0x71ead,0x6f93f,
0x6d432,0x6af86,0x68b3b,0x66751,0x643c8,0x620a0,0x5fdd9,0x5db74,
0x5b970,0x597ce,0x5768e,0x555b0,0x53533,0x51519,0x4f560,0x4d60a,
0x4b717,0x49886,0x47a57,0x45c8b,0x43f22,0x4221b,0x40578,0x3e937,
0x3cd59,0x3b1df,0x396c8,0x37c14,0x361c4,0x347d7,0x32e4e,0x31529,
0x2fc67,0x2e409,0x2cc0f,0x2b479,0x29d47,0x28679,0x27010,0x25a0a,
0x24469,0x22f2d,0x21a54,0x205e1,0x1f1d2,0x1de27,0x1cae2,0x1b801,
0x1a585,0x1936e,0x181bb,0x1706e,0x15f86,0x14f03,0x13ee5,0x12f2d,
0x11fd9,0x110eb,0x10263,0xf43f,0xe682,0xd929,0xcc36,0xbfa9,
0xb382,0xa7c0,0x9c63,0x916d,0x86dc,0x7cb1,0x72ec,0x698d,
0x6093,0x5800,0x4fd2,0x480b,0x40a9,0x39ad,0x3318,0x2ce8,
0x271f,0x21bb,0x1cbe,0x1827,0x13f6,0x102b,0xcc7,0x9c8,
0x730,0x4fe,0x332,0x1cc,0xcc,0x33,0x0,0x33,
0xcc,0x1cc,0x332,0x4fe,0x730,0x9c8,0xcc7,0x102b,
0x13f6,0x1827,0x1cbe,0x21bb,0x271f,0x2ce8,0x3318,0x39ad,
0x40a9,0x480b,0x4fd2,0x5800,0x6093,0x698d,0x72ec,0x7cb1,
0x86dc,0x916d,0x9c63,0xa7c0,0xb382,0xbfa9,0xcc36,0xd929,
0xe682,0xf43f,0x10263,0x110eb,0x11fd9,0x12f2d,0x13ee5,0x14f03,
0x15f86,0x1706e,0x181bb,0x1936e,0x1a585,0x1b801,0x1cae2,0x1de27,
0x1f1d2,0x205e1,0x21a54,0x22f2d,0x24469,0x25a0a,0x27010,0x28679,
0x29d47,0x2b479,0x2cc0f,0x2e409,0x2fc67,0x31529,0x32e4e,0x347d7,
0x361c4,0x37c14,0x396c8,0x3b1df,0x3cd59,0x3e937,0x40578,0x4221b,
0x43f22,0x45c8b,0x47a57,0x49886,0x4b717,0x4d60a,0x4f560,0x51519,
0x53533,0x555b0,0x5768e,0x597ce,0x5b970,0x5db74,0x5fdd9,0x620a0,
0x643c8,0x66751,0x68b3b,0x6af86,0x6d432,0x6f93f,0x71ead,0x7447b,
0x76aa9,0x79138,0x7b827,0x7df76,0x80725,0x82f33,0x857a2,0x88070,
0x8a99d,0x8d32a,0x8fd15,0x92760,0x9520a,0x97d13,0x9a87a,0x9d43f,
0xa0063,0xa2ce6,0xa59c6,0xa8704,0xab4a0,0xae29a,0xb10f1,0xb3fa6,
0xb6eb8,0xb9e27,0xbcdf3,0xbfe1b,0xc2ea1,0xc5f82,0xc90c0,0xcc25b,
0xcf451,0xd26a3,0xd5951,0xd8c5b,0xdbfbf,0xdf37f,0xe279b,0xe5c11,
0xe90e2,0xec60d,0xefb93,0xf3173,0xf67ad,0xf9e41,0xfd52f,0x100c76,
0x104417,0x107c11,0x10b464,0x10ed10,0x112614,0x115f71,0x119927,0x11d334,
0x120d9a,0x124857,0x12836c,0x12bed9,0x12fa9d,0x1336b7,0x137329,0x13aff1,
0x13ed10,0x142a85,0x146850,0x14a671,0x14e4e8,0x1523b4,0x1562d6,0x15a24d,
0x15e219,0x162239,0x1662ae,0x16a378,0x16e495,0x172607,0x1767cc,0x17a9e4,
0x17ec50,0x182f0f,0x187221,0x18b586,0x18f93d,0x193d47,0x1981a2,0x19c650,
0x1a0b4f,0x1a509f,0x1a9641,0x1adc33,0x1b2277,0x1b690a,0x1bafef,0x1bf723,
0x1c3ea7,0x1c867b,0x1cce9e,0x1d1711,0x1d5fd2,0x1da8e3,0x1df241,0x1e3bee,
0x1e85ea,0x1ed033,0x1f1ac9,0x1f65ad,0x1fb0de,0x1ffc5c,0x204827,0x20943e,
0x20e0a1,0x212d51,0x217a4b,0x21c792,0x221524,0x226300,0x22b128,0x22ff9a,
0x234e56,0x239d5c,0x23ecac,0x243c46,0x248c29,0x24dc54,0x252cc9,0x257d86,
0x25ce8c,0x261fd9,0x26716e,0x26c34b,0x27156f,0x2767da,0x27ba8c,0x280d84,
0x2860c3,0x28b447,0x290811,0x295c21,0x29b075,0x2a050f,0x2a59ed,0x2aaf10,
0x2b0477,0x2b5a22,0x2bb010,0x2c0642,0x2c5cb7,0x2cb36e,0x2d0a68,0x2d61a4,
0x2db923,0x2e10e2,0x2e68e4,0x2ec126,0x2f19aa,0x2f726e,0x2fcb72,0x3024b6,
0x307e3b,0x30d7fe,0x313201,0x318c43,0x31e6c3,0x324182,0x329c7f,0x32f7b9,
0x335332,0x33aee7,0x340ad9,0x346708,0x34c374,0x35201b,0x357cfe,0x35da1d,
0x363777,0x36950c,0x36f2db,0x3750e5,0x37af29,0x380da7,0x386c5e,0x38cb4e,
0x392a77,0x3989d9,0x39e973,0x3a4944,0x3aa94e,0x3b098f,0x3b6a07,0x3bcab6,
0x3c2b9b,0x3c8cb6,0x3cee07,0x3d4f8e,0x3db14a,0x3e133b,0x3e7561,0x3ed7bb,
0x3f3a49,0x3f9d0b,0x400000,0x406328,0x40c683,0x412a11,0x418dd0,0x41f1c2,
0x4255e5,0x42ba39,0x431ebf,0x438375,0x43e85b,0x444d71,0x44b2b7,0x45182c,
0x457dd0,0x45e3a3,0x4649a5,0x46afd4,0x471632,0x477cbc,0x47e374,0x484a59,
0x48b16a,0x4918a7,0x498010,0x49e7a5,0x4a4f65,0x4ab74f,0x4b1f65,0x4b87a4,
0x4bf00d,0x4c58a0,0x4cc15d,0x4d2a42,0x4d934f,0x4dfc85,0x4e65e3,0x4ecf69,
0x4f3916,0x4fa2e9,0x500ce4,0x507704,0x50e14b,0x514bb7,0x51b649,0x5220ff,
0x528bdb,0x52f6da,0x5361fd,0x53cd44,0x5438af,0x54a43c,0x550fec,0x557bbe,
0x55e7b2,0x5653c8,0x56bfff,0x572c57,0x5798d0,0x580568,0x587221,0x58defa,
0x594bf1,0x59b908,0x5a263d,0x5a9390,0x5b0101,0x5b6e90,0x5bdc3c,0x5c4a05,
0x5cb7ea,0x5d25eb,0x5d9409,0x5e0241,0x5e7095,0x5edf04,0x5f4d8d,0x5fbc31,
0x602aee,0x6099c4,0x6108b4,0x6177bc,0x61e6dd,0x625615,0x62c566,0x6334cd,
0x63a44c,0x6413e1,0x64838d,0x64f34f,0x656326,0x65d312,0x664314,0x66b32a,
0x672354,0x679392,0x6803e3,0x687448,0x68e4bf,0x695549,0x69c5e5,0x6a3693,
0x6aa752,0x6b1822,0x6b8903,0x6bf9f4,0x6c6af5,0x6cdc06,0x6d4d26,0x6dbe55,
0x6e2f93,0x6ea0df,0x6f1239,0x6f83a0,0x6ff514,0x706695,0x70d823,0x7149bd,
0x71bb62,0x722d13,0x729ecf,0x731096,0x738267,0x73f442,0x746626,0x74d814,
0x754a0b,0x75bc0a,0x762e12,0x76a021,0x771238,0x778456,0x77f67a,0x7868a6,
0x78dad7,0x794d0e,0x79bf4a,0x7a318b,0x7aa3d1,0x7b161b,0x7b8869,0x7bfabb,
0x7c6d10,0x7cdf68,0x7d51c2,0x7dc41e,0x7e367c,0x7ea8dc,0x7f1b3c,0x7f8d9e
); code;
const sin_table_const_1Khz : array[180] of longint = (
0x800000,0x847796,0x88edc7,0x8d6130,0x91d06c,0x963a1a,0x9a9cd9,0x9ef74b,
0xa34815,0xa78dde,0xabc750,0xaff31b,0xb40ff2,0xb81c8b,0xbc17a4,0xbfffff,
0xc3d464,0xc793a1,0xcb3c8b,0xcecdfe,0xd246dc,0xd5a612,0xd8ea90,0xdc1353,
0xdf1f5e,0xe20dbe,0xe4dd88,0xe78dde,0xea1de6,0xec8cd6,0xeed9eb,0xf1046c,
0xf30bae,0xf4ef0e,0xf6adf5,0xf847d8,0xf9bc37,0xfb0a9f,0xfc32a6,0xfd33f0,
0xfe0e2d,0xfec11a,0xff4c7d,0xffb02d,0xffec09,0xffffff,0xffec09,0xffb02d,
0xff4c7d,0xfec11a,0xfe0e2d,0xfd33f0,0xfc32a6,0xfb0a9f,0xf9bc37,0xf847d8,
0xf6adf5,0xf4ef0e,0xf30bae,0xf1046c,0xeed9eb,0xec8cd6,0xea1de6,0xe78dde,
0xe4dd88,0xe20dbe,0xdf1f5e,0xdc1353,0xd8ea90,0xd5a612,0xd246dc,0xcecdfe,
0xcb3c8b,0xc793a1,0xc3d464,0xbfffff,0xbc17a4,0xb81c8b,0xb40ff2,0xaff31b,
0xabc750,0xa78dde,0xa34815,0x9ef74b,0x9a9cd9,0x963a1a,0x91d06c,0x8d6130,
0x88edc7,0x847796,0x800000,0x7b8869,0x771238,0x729ecf,0x6e2f93,0x69c5e5,
0x656326,0x6108b4,0x5cb7ea,0x587221,0x5438af,0x500ce4,0x4bf00d,0x47e374,
0x43e85b,0x400000,0x3c2b9b,0x386c5e,0x34c374,0x313201,0x2db923,0x2a59ed,
0x27156f,0x23ecac,0x20e0a1,0x1df241,0x1b2277,0x187221,0x15e219,0x137329,
0x112614,0xefb93,0xcf451,0xb10f1,0x9520a,0x7b827,0x643c8,0x4f560,
0x3cd59,0x2cc0f,0x1f1d2,0x13ee5,0xb382,0x4fd2,0x13f6,0x0,
0x13f6,0x4fd2,0xb382,0x13ee5,0x1f1d2,0x2cc0f,0x3cd59,0x4f560,
0x643c8,0x7b827,0x9520a,0xb10f1,0xcf451,0xefb93,0x112614,0x137329,
0x15e219,0x187221,0x1b2277,0x1df241,0x20e0a1,0x23ecac,0x27156f,0x2a59ed,
0x2db923,0x313201,0x34c374,0x386c5e,0x3c2b9b,0x400000,0x43e85b,0x47e374,
0x4bf00d,0x500ce4,0x5438af,0x587221,0x5cb7ea,0x6108b4,0x656326,0x69c5e5,
0x6e2f93,0x729ecf,0x771238,0x7b8869
); code;
const sin_table_const_10Khz : array[18] of longint = (
0x800000,0xabc750,0xd246dc,0xeed9eb,0xfe0e2d,0xfe0e2d,0xeed9eb,0xd246dc,
0xabc750,0x800000,0x5438af,0x2db923,0x112614,0x1f1d2,0x1f1d2,0x112614,
0x2db923,0x5438af
); code;
const sin_table_const_20Khz : array[9] of longint = (
0x800000,0xd246dc,0xfe0e2d,0xeed9eb,0xabc750,0x5438af,0x112614,0x1f1d2,
0x2db923
); code;
var rData : dword;
i : dword;
sin_table : array[20000] of longint;
next_data : longint;
led_cnt : dword;
sin_len,sin_cnt : dword;
led_pos,setup_cnt : dword;
procedure I2S_Int(); iv IVT_SPI1_TX; ilevel 7; ics ICS_SRS;
begin
SPI1TXIF_bit := 0;
SPI1BUF := next_data;
if inc(sin_cnt) >= sin_len then sin_cnt := 0;
next_data := sin_table[sin_cnt];
if inc(led_cnt) >= 180000 then
begin
led_cnt := 0;
LATB.led_pos := not LATB.led_pos; // Invert PORTB
LATB.7 := not LATB.7; // Invert PORTB
end;
end;
procedure setup_100Hz;
begin
LATB := 0; // Initialize PORTB value
sin_cnt := 0;
sin_len := 1800;
led_pos := 0;
i := 0;
while i < sin_len do
begin
sin_table[i] := sin_table_const_100hz[i] - 0x800000;
inc(i);
end;
next_data := sin_table[0];
end;
procedure setup_1KHz;
begin
LATB := 0; // Initialize PORTB value
sin_cnt := 0;
sin_len := 180;
led_pos := 1;
i := 0;
while i < sin_len do
begin
sin_table[i] := sin_table_const_1Khz[i] - 0x800000;
inc(i);
end;
next_data := sin_table[0];
end;
procedure setup_10KHz;
begin
LATB := 0; // Initialize PORTB value
sin_cnt := 0;
sin_len := 18;
led_pos := 2;
i := 0;
while i < sin_len do
begin
sin_table[i] := sin_table_const_10Khz[i] - 0x800000;
inc(i);
end;
next_data := sin_table[0];
end;
procedure setup_20KHz;
begin
LATB := 0; // Initialize PORTB value
sin_cnt := 0;
sin_len := 9;
led_pos := 3;
i := 0;
while i < sin_len do
begin
sin_table[i] := sin_table_const_20Khz[i] - 0x800000;
inc(i);
end;
next_data := sin_table[0];
end;
procedure Init_I2S;
begin
SPI1CON := 0; // Stops and resets the SPI1.
SPI1CON2 := 0; // Reset audio settings
SPI1BRG := 0;
rData := SPI1BUF; // clears the receive buffer
SPI1TXIP0_bit := 1;
SPI1TXIP1_bit := 1;
SPI1TXIP2_bit := 1;
SPI1TXIF_bit := 0;
SPI1TXIE_bit := 1;
SPI1STATCLR := 0x40; // clear the Overflow
SPI1CON2 := 0x0000008A; // Right-Justified Mode, AUDEN =1, AUDMON=1
SPI1BRG := 0x00; // to generate 180kbps sample rate, REFO1CLK 23.04Mhz, SPI1BRG div 2
SPI1CON := 0x20810C2C; // Master mode, CKP = 0, FRMPOL = 1, MSTN = 1
ON_SPI1CON_bit := 1; // SPI ON
end;
procedure Init_REFCLK; // 23.04Mhz
begin
REFO1CON := 0;
REFO1CON := 0x00020001; // N = 2, PBCLK1 94.5MHz (24 MHz / 4 * 63 /2 / 2)
REFO1TRIM := 0x0D000000; // M = 26
ON_REFO1CON_bit := 1; // 23.04Mhz
end;
begin
ANSELA := 0; // Initialize AN pins as digital
ANSELB := 0; // Initialize AN pins as digital
ANSELC := 0; // Initialize AN pins as digital
ANSELD := 0; // Initialize AN pins as digital
ANSELE := 0; // Initialize AN pins as digital
ANSELF := 0; // Initialize AN pins as digital
ANSELG := 0; // Initialize AN pins as digital
ANSELH := 0; // Initialize AN pins as digital
ANSELJ := 0; // Initialize AN pins as digital
TRISB := 0; // initialize PORTB as output
LATB := 0; // Initialize PORTB value
TRISG.0 := 1; // button
setup_1KHz;
setup_cnt := 1;
Unlock_IOLOCK();
// BCLK, RD1
PPS_Mapping(_RPD2, _OUTPUT, _SDO1); // DAT, RD2
PPS_Mapping(_RPD4, _OUTPUT, _SDO1); // LRCK, RD4, SS1
Lock_IOLOCK();
Init_REFCLK; // 23.04Mhz
Init_I2S;
EnableInterrupts(); // Enable all interrupts
while true do
begin
if PORTG.0 = 1 then
begin
delay_ms(100);
while PORTG.0 = 1 do nop;
delay_ms(100);
while PORTG.0 = 1 do nop;
if inc(setup_cnt) > 3 then setup_cnt := 0;
DisableInterrupts(); // Enable all interrupts
case setup_cnt of
0 : setup_100Hz;
1 : setup_1KHz;
2 : setup_10KHz
else setup_20KHz;
end;
Init_I2S;
EnableInterrupts(); // Enable all interrupts
end;
end;
end.
