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TLV320ADC3140: 基于TMS320F28335的McBSP的DMA传输问题

2024-09-04 分类：音频 阅读(10)

Part Number:TLV320ADC3140Other Parts Discussed in Thread: C2000WARE

这是ADC3140的配置，两个级联的ADC3140芯片，我想实现一个帧同步发送8个slot的32位数据出来到总线，请问这样配置有什么不妥之处吗？

void I2C_config(void)
{IICA_Write(0x98,0x02,0x81);IICA_Write(0x9A,0x02,0x81);DELAY_US(10*1000);IICA_Write(0x98,0x00,0x00);IICA_Write(0x98,0x07,0x31);IICA_Write(0x98,0x08,0x00);IICA_Write(0x98,0x09,0x00);IICA_Write(0x98,0x21,0xA2);IICA_Write(0x98,0x3B,0x00);IICA_Write(0x98,0x0B,0x00);IICA_Write(0x98,0x0C,0x01);IICA_Write(0x98,0x0D,0x02);IICA_Write(0x98,0x0E,0x03);IICA_Write(0x98,0x3C,0xB4);IICA_Write(0x98,0x41,0xB4);IICA_Write(0x98,0x46,0xB4);IICA_Write(0x98,0x4B,0xB4);

/*IICA_Write(0x98,0x3C,0x94);IICA_Write(0x98,0x41,0x94);IICA_Write(0x98,0x46,0x94);IICA_Write(0x98,0x4B,0x94);
*/IICA_Write(0x98,0x3D,0x24);IICA_Write(0x98,0x42,0x24);IICA_Write(0x98,0x47,0x24);IICA_Write(0x98,0x4C,0x24);IICA_Write(0x98,0x6B,0x00);IICA_Write(0x98,0x6C,0xD0);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x08,0x7F);IICA_Write(0x98,0x09,0xFF);IICA_Write(0x98,0x0A,0xFF);IICA_Write(0x98,0x0B,0xFF);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x0C,0x80);IICA_Write(0x98,0x0D,0xD3);IICA_Write(0x98,0x0E,0xD5);IICA_Write(0x98,0x0F,0xE3);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x10,0x7F);IICA_Write(0x98,0x11,0x93);IICA_Write(0x98,0x12,0x61);IICA_Write(0x98,0x13,0x37);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x14,0x7F);IICA_Write(0x98,0x15,0x4F);IICA_Write(0x98,0x16,0x03);IICA_Write(0x98,0x17,0xF2);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x18,0x80);IICA_Write(0x98,0x19,0x26);IICA_Write(0x98,0x1A,0x94);IICA_Write(0x98,0x1B,0xC9);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x58,0x7F);IICA_Write(0x98,0x59,0xFF);IICA_Write(0x98,0x5A,0xFF);IICA_Write(0x98,0x5B,0xFF);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x5C,0x80);IICA_Write(0x98,0x5D,0xD3);IICA_Write(0x98,0x5E,0xD5);IICA_Write(0x98,0x5F,0xE3);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x60,0x7F);IICA_Write(0x98,0x61,0x93);IICA_Write(0x98,0x62,0x61);IICA_Write(0x98,0x63,0x37);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x64,0x7F);IICA_Write(0x98,0x65,0x4F);IICA_Write(0x98,0x66,0x03);IICA_Write(0x98,0x67,0xF2);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x68,0x80);IICA_Write(0x98,0x69,0x26);IICA_Write(0x98,0x6A,0x94);IICA_Write(0x98,0x6B,0xC9);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x1C,0x7F);IICA_Write(0x98,0x1D,0xFF);IICA_Write(0x98,0x1E,0xFF);IICA_Write(0x98,0x1F,0xFF);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x20,0x80);IICA_Write(0x98,0x21,0xD3);IICA_Write(0x98,0x22,0xD5);IICA_Write(0x98,0x23,0xE3);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x24,0x7F);IICA_Write(0x98,0x25,0x93);IICA_Write(0x98,0x26,0x61);IICA_Write(0x98,0x27,0x37);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x28,0x7F);IICA_Write(0x98,0x29,0x4F);IICA_Write(0x98,0x2A,0x03);IICA_Write(0x98,0x2B,0xF2);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x2C,0x80);IICA_Write(0x98,0x2D,0x26);IICA_Write(0x98,0x2E,0x94);IICA_Write(0x98,0x2F,0xC9);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x6C,0x7F);IICA_Write(0x98,0x6D,0xFF);IICA_Write(0x98,0x6E,0xFF);IICA_Write(0x98,0x6F,0xFF);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x70,0x80);IICA_Write(0x98,0x71,0xD3);IICA_Write(0x98,0x72,0xD5);IICA_Write(0x98,0x73,0xE3);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x74,0x7F);IICA_Write(0x98,0x75,0x93);IICA_Write(0x98,0x76,0x61);IICA_Write(0x98,0x77,0x37);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x78,0x7F);IICA_Write(0x98,0x79,0x4F);IICA_Write(0x98,0x7A,0x03);IICA_Write(0x98,0x7B,0xF2);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x7C,0x80);IICA_Write(0x98,0x7D,0x26);IICA_Write(0x98,0x7E,0x94);IICA_Write(0x98,0x7F,0xC9);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x30,0x7F);IICA_Write(0x98,0x31,0xFF);IICA_Write(0x98,0x32,0xFF);IICA_Write(0x98,0x33,0xFF);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x34,0x80);IICA_Write(0x98,0x35,0xD3);IICA_Write(0x98,0x36,0xD5);IICA_Write(0x98,0x37,0xE3);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x38,0x7F);IICA_Write(0x98,0x39,0x93);IICA_Write(0x98,0x3A,0x61);IICA_Write(0x98,0x3B,0x37);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x3C,0x7F);IICA_Write(0x98,0x3D,0x4F);IICA_Write(0x98,0x3E,0x03);IICA_Write(0x98,0x3F,0xF2);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x40,0x80);IICA_Write(0x98,0x41,0x26);IICA_Write(0x98,0x42,0x94);IICA_Write(0x98,0x43,0xC9);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x08,0x7F);IICA_Write(0x98,0x09,0xFF);IICA_Write(0x98,0x0A,0xFF);IICA_Write(0x98,0x0B,0xFF);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x0C,0x80);IICA_Write(0x98,0x0D,0xD3);IICA_Write(0x98,0x0E,0xD5);IICA_Write(0x98,0x0F,0xE3);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x10,0x7F);IICA_Write(0x98,0x11,0x93);IICA_Write(0x98,0x12,0x61);IICA_Write(0x98,0x13,0x37);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x14,0x7F);IICA_Write(0x98,0x15,0x4F);IICA_Write(0x98,0x16,0x03);IICA_Write(0x98,0x17,0xF2);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x18,0x80);IICA_Write(0x98,0x19,0x26);IICA_Write(0x98,0x1A,0x94);IICA_Write(0x98,0x1B,0xC9);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x44,0x7F);IICA_Write(0x98,0x45,0xFF);IICA_Write(0x98,0x46,0xFF);IICA_Write(0x98,0x47,0xFF);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x48,0x80);IICA_Write(0x98,0x49,0xD3);IICA_Write(0x98,0x4A,0xD5);IICA_Write(0x98,0x4B,0xE3);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x4C,0x7F);IICA_Write(0x98,0x4D,0x93);IICA_Write(0x98,0x4E,0x61);IICA_Write(0x98,0x4F,0x37);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x50,0x7F);IICA_Write(0x98,0x51,0x4F);IICA_Write(0x98,0x52,0x03);IICA_Write(0x98,0x53,0xF2);IICA_Write(0x98,0x00,0x02);IICA_Write(0x98,0x54,0x80);IICA_Write(0x98,0x55,0x26);IICA_Write(0x98,0x56,0x94);IICA_Write(0x98,0x57,0xC9);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x1C,0x7F);IICA_Write(0x98,0x1D,0xFF);IICA_Write(0x98,0x1E,0xFF);IICA_Write(0x98,0x1F,0xFF);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x20,0x80);IICA_Write(0x98,0x21,0xD3);IICA_Write(0x98,0x22,0xD5);IICA_Write(0x98,0x23,0xE3);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x24,0x7F);IICA_Write(0x98,0x25,0x93);IICA_Write(0x98,0x26,0x61);IICA_Write(0x98,0x27,0x37);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x28,0x7F);IICA_Write(0x98,0x29,0x4F);IICA_Write(0x98,0x2A,0x03);IICA_Write(0x98,0x2B,0xF2);IICA_Write(0x98,0x00,0x03);IICA_Write(0x98,0x2C,0x80);IICA_Write(0x98,0x2D,0x26);IICA_Write(0x98,0x2E,0x94);IICA_Write(0x98,0x2F,0xC9);IICA_Write(0x98,0x00,0x00);IICA_Write(0x98,0x73,0xF0);IICA_Write(0x98,0x74,0xF0);IICA_Write(0x9A,0x00,0x00);IICA_Write(0x9A,0x07,0x31);IICA_Write(0x9A,0x08,0x00);IICA_Write(0x9A,0x09,0x00);IICA_Write(0x9A,0x21,0xA2);IICA_Write(0x9A,0x3B,0x00);IICA_Write(0x9A,0x0B,0x04);IICA_Write(0x9A,0x0C,0x05);IICA_Write(0x9A,0x0D,0x06);IICA_Write(0x9A,0x0E,0x07);IICA_Write(0x9A,0x3C,0xB4);IICA_Write(0x9A,0x41,0xB4);IICA_Write(0x9A,0x46,0xB4);IICA_Write(0x9A,0x4B,0xB4);

/*IICA_Write(0x9A,0x3C,0x94);IICA_Write(0x9A,0x41,0x94);IICA_Write(0x9A,0x46,0x94);IICA_Write(0x9A,0x4B,0x94);
*/IICA_Write(0x9A,0x3D,0x24);IICA_Write(0x9A,0x42,0x24);IICA_Write(0x9A,0x47,0x24);IICA_Write(0x9A,0x4C,0x24);IICA_Write(0x9A,0x6B,0x00);IICA_Write(0x9A,0x6C,0x90);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x08,0x7F);IICA_Write(0x9A,0x09,0xFF);IICA_Write(0x9A,0x0A,0xFF);IICA_Write(0x9A,0x0B,0xFF);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x0C,0x80);IICA_Write(0x9A,0x0D,0xD3);IICA_Write(0x9A,0x0E,0xD5);IICA_Write(0x9A,0x0F,0xE3);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x10,0x7F);IICA_Write(0x9A,0x11,0x93);IICA_Write(0x9A,0x12,0x61);IICA_Write(0x9A,0x13,0x37);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x14,0x7F);IICA_Write(0x9A,0x15,0x4F);IICA_Write(0x9A,0x16,0x03);IICA_Write(0x9A,0x17,0xF2);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x18,0x80);IICA_Write(0x9A,0x19,0x26);IICA_Write(0x9A,0x1A,0x94);IICA_Write(0x9A,0x1B,0xC9);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x58,0x7F);IICA_Write(0x9A,0x59,0xFF);IICA_Write(0x9A,0x5A,0xFF);IICA_Write(0x9A,0x5B,0xFF);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x5C,0x80);IICA_Write(0x9A,0x5D,0xD3);IICA_Write(0x9A,0x5E,0xD5);IICA_Write(0x9A,0x5F,0xE3);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x60,0x7F);IICA_Write(0x9A,0x61,0x93);IICA_Write(0x9A,0x62,0x61);IICA_Write(0x9A,0x63,0x37);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x64,0x7F);IICA_Write(0x9A,0x65,0x4F);IICA_Write(0x9A,0x66,0x03);IICA_Write(0x9A,0x67,0xF2);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x68,0x80);IICA_Write(0x9A,0x69,0x26);IICA_Write(0x9A,0x6A,0x94);IICA_Write(0x9A,0x6B,0xC9);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x1C,0x7F);IICA_Write(0x9A,0x1D,0xFF);IICA_Write(0x9A,0x1E,0xFF);IICA_Write(0x9A,0x1F,0xFF);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x20,0x80);IICA_Write(0x9A,0x21,0xD3);IICA_Write(0x9A,0x22,0xD5);IICA_Write(0x9A,0x23,0xE3);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x24,0x7F);IICA_Write(0x9A,0x25,0x93);IICA_Write(0x9A,0x26,0x61);IICA_Write(0x9A,0x27,0x37);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x28,0x7F);IICA_Write(0x9A,0x29,0x4F);IICA_Write(0x9A,0x2A,0x03);IICA_Write(0x9A,0x2B,0xF2);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x2C,0x80);IICA_Write(0x9A,0x2D,0x26);IICA_Write(0x9A,0x2E,0x94);IICA_Write(0x9A,0x2F,0xC9);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x6C,0x7F);IICA_Write(0x9A,0x6D,0xFF);IICA_Write(0x9A,0x6E,0xFF);IICA_Write(0x9A,0x6F,0xFF);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x70,0x80);IICA_Write(0x9A,0x71,0xD3);IICA_Write(0x9A,0x72,0xD5);IICA_Write(0x9A,0x73,0xE3);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x74,0x7F);IICA_Write(0x9A,0x75,0x93);IICA_Write(0x9A,0x76,0x61);IICA_Write(0x9A,0x77,0x37);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x78,0x7F);IICA_Write(0x9A,0x79,0x4F);IICA_Write(0x9A,0x7A,0x03);IICA_Write(0x9A,0x7B,0xF2);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x7C,0x80);IICA_Write(0x9A,0x7D,0x26);IICA_Write(0x9A,0x7E,0x94);IICA_Write(0x9A,0x7F,0xC9);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x30,0x7F);IICA_Write(0x9A,0x31,0xFF);IICA_Write(0x9A,0x32,0xFF);IICA_Write(0x9A,0x33,0xFF);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x34,0x85);IICA_Write(0x9A,0x35,0x75);IICA_Write(0x9A,0x36,0x4B);IICA_Write(0x9A,0x37,0xED);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x38,0x7D);IICA_Write(0x9A,0x39,0x08);IICA_Write(0x9A,0x3A,0x7A);IICA_Write(0x9A,0x3B,0xA3);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x3C,0x7B);IICA_Write(0x9A,0x3D,0x9D);IICA_Write(0x9A,0x3E,0x54);IICA_Write(0x9A,0x3F,0x5D);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x40,0x80);IICA_Write(0x9A,0x41,0xC0);IICA_Write(0x9A,0x42,0x74);IICA_Write(0x9A,0x43,0x06);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x08,0x7F);IICA_Write(0x9A,0x09,0xFF);IICA_Write(0x9A,0x0A,0xFF);IICA_Write(0x9A,0x0B,0xFF);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x0C,0x90);IICA_Write(0x9A,0x0D,0x18);IICA_Write(0x9A,0x0E,0x5C);IICA_Write(0x9A,0x0F,0xDC);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x10,0x7F);IICA_Write(0x9A,0x11,0x66);IICA_Write(0x9A,0x12,0xAC);IICA_Write(0x9A,0x13,0xB6);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x14,0x70);IICA_Write(0x9A,0x15,0x19);IICA_Write(0x9A,0x16,0xE9);IICA_Write(0x9A,0x17,0xAD);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x18,0x80);IICA_Write(0x9A,0x19,0x26);IICA_Write(0x9A,0x1A,0x94);IICA_Write(0x9A,0x1B,0xC9);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x44,0x7F);IICA_Write(0x9A,0x45,0xFF);IICA_Write(0x9A,0x46,0xFF);IICA_Write(0x9A,0x47,0xFF);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x48,0x80);IICA_Write(0x9A,0x49,0xD3);IICA_Write(0x9A,0x4A,0xD5);IICA_Write(0x9A,0x4B,0xE3);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x4C,0x7F);IICA_Write(0x9A,0x4D,0x93);IICA_Write(0x9A,0x4E,0x61);IICA_Write(0x9A,0x4F,0x37);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x50,0x7F);IICA_Write(0x9A,0x51,0x4F);IICA_Write(0x9A,0x52,0x03);IICA_Write(0x9A,0x53,0xF2);IICA_Write(0x9A,0x00,0x02);IICA_Write(0x9A,0x54,0x80);IICA_Write(0x9A,0x55,0x26);IICA_Write(0x9A,0x56,0x94);IICA_Write(0x9A,0x57,0xC9);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x1C,0x7F);IICA_Write(0x9A,0x1D,0xFF);IICA_Write(0x9A,0x1E,0xFF);IICA_Write(0x9A,0x1F,0xFF);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x20,0x80);IICA_Write(0x9A,0x21,0xD3);IICA_Write(0x9A,0x22,0xD5);IICA_Write(0x9A,0x23,0xE3);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x24,0x7F);IICA_Write(0x9A,0x25,0x93);IICA_Write(0x9A,0x26,0x61);IICA_Write(0x9A,0x27,0x37);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x28,0x7F);IICA_Write(0x9A,0x29,0x4F);IICA_Write(0x9A,0x2A,0x03);IICA_Write(0x9A,0x2B,0xF2);IICA_Write(0x9A,0x00,0x03);IICA_Write(0x9A,0x2C,0x80);IICA_Write(0x9A,0x2D,0x26);IICA_Write(0x9A,0x2E,0x94);IICA_Write(0x9A,0x2F,0xC9);IICA_Write(0x9A,0x00,0x00);IICA_Write(0x9A,0x73,0xF0);IICA_Write(0x9A,0x74,0xF0);IICA_Write(0x98,0x75,0x60);IICA_Write(0x9A,0x75,0x60);
}

这是F28335的McBSP的配置，我想实现直接从McBSP发送数据到DMA，DSP不需要发送数据，只需要接收数据，这样配置有什么问题吗？

void InitMcbspaGpio(void)
{
	EALLOW;

/* Configure McBSP-A pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be McBSP functional pins.
// Comment out other unwanted lines.

//	GpioCtrlRegs.GPAMUX2.bit.GPIO20 = 2;	// GPIO20 is MDXA pin
	GpioCtrlRegs.GPAMUX2.bit.GPIO21 = 2;	// GPIO21 is MDRA pin
//GpioCtrlRegs.GPAMUX2.bit.GPIO22 = 2;	// GPIO22 is MCLKXA pin//GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 2;		// GPIO7 is MCLKRA pin (Comment as needed)
	GpioCtrlRegs.GPBMUX2.bit.GPIO58 = 1;	// GPIO58 is MCLKRA pin (Comment as needed)
//GpioCtrlRegs.GPAMUX2.bit.GPIO23 = 2;	// GPIO23 is MFSXA pin//GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 2;		// GPIO5 is MFSRA pin (Comment as needed)
	GpioCtrlRegs.GPBMUX2.bit.GPIO59 = 1;	// GPIO59 is MFSRA pin (Comment as needed)

/* Enable internal pull-up for the selected pins */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.

//	GpioCtrlRegs.GPAPUD.bit.GPIO20 = 0;// Enable pull-up on GPIO20 (MDXA)
	GpioCtrlRegs.GPAPUD.bit.GPIO21 = 0;// Enable pull-up on GPIO21 (MDRA)
//	GpioCtrlRegs.GPAPUD.bit.GPIO22 = 0;// Enable pull-up on GPIO22 (MCLKXA)
	//GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0;// Enable pull-up on GPIO7 (MCLKRA) (Comment as needed)
	GpioCtrlRegs.GPBPUD.bit.GPIO58 = 0;// Enable pull-up on GPIO58 (MCLKRA) (Comment as needed)
//	GpioCtrlRegs.GPAPUD.bit.GPIO23 = 0;// Enable pull-up on GPIO23 (MFSXA)
	//GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0;// Enable pull-up on GPIO5 (MFSRA) (Comment as needed)
	GpioCtrlRegs.GPBPUD.bit.GPIO59 = 0;// Enable pull-up on GPIO59 (MFSRA) (Comment as needed)

/* Set qualification for selected input pins to asynch only */
// This will select asynch (no qualification) for the selected pins.
// Comment out other unwanted lines.

/*GpioCtrlRegs.GPAQSEL2.bit.GPIO21 = 3;// Asynch input GPIO21 (MDRA)
//GpioCtrlRegs.GPAQSEL2.bit.GPIO22 = 3;// Asynch input GPIO22 (MCLKXA)//GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 3;// Asynch input GPIO7 (MCLKRA) (Comment as needed)GpioCtrlRegs.GPBQSEL2.bit.GPIO58 = 3; // Asynch input GPIO58(MCLKRA) (Comment as needed)
//GpioCtrlRegs.GPAQSEL2.bit.GPIO23 = 3;// Asynch input GPIO23 (MFSXA)//GpioCtrlRegs.GPAQSEL1.bit.GPIO5 = 3;// Asynch input GPIO5 (MFSRA) (Comment as needed)GpioCtrlRegs.GPBQSEL2.bit.GPIO59 = 3; // Asynch input GPIO59 (MFSRA) (Comment as needed)
*/
	EDIS;
}

void InitMcbspa(void)
{
// McBSP-A register settingsMcbspaRegs.SPCR2.all=0x0000;		// Reset FS generator, sample rate generator & transmitter
	McbspaRegs.SPCR1.all=0x0000;		// Reset Receiver, Right justify word
	//新增McbspaRegs.SPCR2.bit.FREE=1;McbspaRegs.SPCR2.bit.SOFT=1;//当在高级语言调试器中遇到断点时，它们决定McBSP的状态。如果FREE = 1，时钟在软件断点上继续运行，数据仍然被移出。当FREE = 1时，软位是一个不关心。//FREE = 0表示软位生效。当断点发生时，如果SOFT = 0，时钟立即停止，终止传输。如果SOFT = 1，并且在传输过程中出现断点，则继续传输，直到传输完成，然后时钟停止McbspaRegs.MFFINT.all=0x0000;// Disable all interrupts  MCBSP中断不使能是能的原因可能是因为和DMA连接所以没直接接到CPU的PIE级，而是发送XEVT信号到DMA.McbspaRegs.RCR1.bit.RFRLEN1 = 7;//每帧8个码字，每字32位McbspaRegs.RCR1.bit.RWDLEN1=5;// 32-bit wordMcbspaRegs.RCR2.all=0x0;			// Single-phase frame, 1 word/frame, No companding	(Receive)McbspaRegs.RCR1.all=0x0;

//McbspaRegs.PCR.bit.FSXM = 1;		// FSX generated internally, FSR derived from an external sourceMcbspaRegs.PCR.bit.SCLKME = 0;McbspaRegs.PCR.bit.FSRM = 1;
//	McbspaRegs.PCR.bit.CLKXM = 1;		// CLKX generated internally, CLKR derived from an external source
	McbspaRegs.PCR.bit.CLKRM = 1;McbspaRegs.SRGR2.bit.CLKSM = 1;		// CLKSM=1 (If SCLKME=0, i/p clock to SRG is LSPCLK)
	McbspaRegs.SRGR2.bit.FPER = 255;		// FPER = 256 CLKG periods
	McbspaRegs.SRGR2.bit.FSGM = 1;McbspaRegs.SRGR1.bit.FWID = 127;// Frame Width = 128 CLKG periodMcbspaRegs.SRGR1.bit.CLKGDV = CLKGDV_VAL;	// CLKG frequency = LSPCLK/(CLKGDV+1)delay_loop();// Wait at least 2 SRG clock cyclesMcbspaRegs.SPCR2.bit.GRST=1; // Enable the sample rate generator
	clkg_delay_loop();// Wait at least 2 CLKG cycles
	McbspaRegs.SPCR2.bit.XRST=1; // Release TX from Reset
	McbspaRegs.SPCR1.bit.RRST=1; // Release RX from ResetMcbspaRegs.SPCR2.bit.FRST=1; // Frame Sync Generator reset

}

这是DMA的代码，这个部分我需要请求各位的帮助，因为我的rdata数组初始化以后，我看程序Debug的时候没有变化。

void init_dma_32()
{EALLOW;DmaRegs.DMACTRL.bit.HARDRESET = 1;asm(" NOP");// Only 1 NOP needed per Design// Channel 2, McBSPA ReceiveDmaRegs.CH2.BURST_SIZE.all = 1;// 2 words/burstDmaRegs.CH2.SRC_BURST_STEP = 1;// Increment 1 16-bit addr. btwn wordsDmaRegs.CH2.DST_BURST_STEP = 1;// Increment 1 16-bit addr. btwn wordsDmaRegs.CH2.TRANSFER_SIZE = 1023;// Interrupt every 512 bursts/transferDmaRegs.CH2.SRC_TRANSFER_STEP = 0xFFFF;// Decrement  back to DRR2DmaRegs.CH2.DST_TRANSFER_STEP = 1;// Move to next word in buffer after each word in a burstDmaRegs.CH2.SRC_ADDR_SHADOW = (Uint32) &McbspaRegs.DRR2.all;// Start address = McBSPA DRRDmaRegs.CH2.SRC_BEG_ADDR_SHADOW = (Uint32) &McbspaRegs.DRR2.all;// Not needed unless using wrap functionDmaRegs.CH2.DST_ADDR_SHADOW = (Uint32) &rdata[0];// Start address = Receive buffer (for McBSP-A)DmaRegs.CH2.DST_BEG_ADDR_SHADOW = (Uint32) &rdata[0]; // Not needed unless using wrap functionDmaRegs.CH2.CONTROL.bit.SYNCCLR = 1;// Clear sync flagDmaRegs.CH2.CONTROL.bit.ERRCLR = 1;// Clear sync error flagDmaRegs.CH2.DST_WRAP_SIZE = 0xFFFF;// Put to maximum - don't want destination wrapDmaRegs.CH2.SRC_WRAP_SIZE = 0xFFFF;// Put to maximum - don't want source wrapDmaRegs.CH2.MODE.bit.CHINTE = 1;// Enable channel interrupt//新增DmaRegs.CH2.MODE.bit.ONESHOT = 1;//连续传送帧信号，直到transfer count =0 .不然只传送一帧。continuous=0,transfer count =0时就停止传送。DmaRegs.CH2.MODE.bit.CHINTMODE = 1;// Interrupt at end of transferDmaRegs.CH2.MODE.bit.PERINTE = 1;// Enable peripheral interrupt eventDmaRegs.CH2.MODE.bit.PERINTSEL = DMA_MREVTA;  // Peripheral interrupt select = McBSP MRSYNCADmaRegs.CH2.CONTROL.bit.PERINTCLR = 1;// Clear any spurious interrupt flagsEDIS;
}
void start_dma (void)
{EALLOW;DmaRegs.CH2.CONTROL.bit.RUN = 1;// Start DMA Receive from McBSP-AEDIS;
}

Alice：

您好，

      请根据TLV320ADC3140级联方式，参考下面文档配置，

      

     多个 TLV320ADCx140/PCMx140-Q1、TLV320ADCx120 和 PCMx120-Q1 器件共享 TDM 和 I2C 总线 (Rev. C) (ti.com.cn)

     

    请参考c2000ware中的Example_2833xMcBSP_DLB_DMA.c (ti.com)

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