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Xcore AI DDR mic test (1b port) #28

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91e9bda
Test for 2-mic DDR array on XVF3510 m/board
matthewh10 Feb 4, 2019
b486faf
Fix mic output to work for two mics array
matthewh10 Feb 7, 2019
1985add
Add support for testing XCORE-AI boards (explorer and Osprey)
ed-xmos Oct 19, 2020
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18 changes: 14 additions & 4 deletions tests/test_mic_input/Makefile
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
# The TARGET variable determines what target system the application is
# compiled for. It either refers to an XN file in the source directories
# or a valid argument for the --target option when compiling
TARGET = SMART-MIC-BASE-1V0


# The APP_NAME variable determines the name of the final .xe file. It should
# not include the .xe postfix. If left blank the name will default to
Expand All @@ -18,15 +18,25 @@ USED_MODULES = lib_mic_array lib_mic_array_board_support
# xcc for the final link (mapping) stage.
COMMON_FLAGS = -O2 -g -report

XCC_FLAGS_8_MICS_DDR = $(COMMON_FLAGS) -DCOUNT=8 -DDDR=1
XCC_FLAGS_7_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=7 -DDDR=0
#XCC_FLAGS_8_MICS_DDR = $(COMMON_FLAGS) -DCOUNT=8 -DDDR=1
# XCC_FLAGS_2_MICS_DDR = $(COMMON_FLAGS) -DCOUNT=2 -DDDR=1
#XCC_FLAGS_7_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=7 -DDDR=0
#XCC_FLAGS_6_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=6 -DDDR=0
#XCC_FLAGS_5_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=5 -DDDR=0
XCC_FLAGS_4_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=4 -DDDR=0
#XCC_FLAGS_4_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=4 -DDDR=0
#XCC_FLAGS_3_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=3 -DDDR=0
#XCC_FLAGS_2_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=2 -DDDR=0
#XCC_FLAGS_1_MICS_SDR = $(COMMON_FLAGS) -DCOUNT=1 -DDDR=0

XCC_FLAGS_2_MICS_DDR_XS3 = $(COMMON_FLAGS) -DCOUNT=2 -DDDR=1 -DXCORE_AI=1

ifeq ($(findstring XS3, $(CONFIG)), XS3)
TARGET = XCORE-AI-EXPLORER
else
TARGET = SMART-MIC-BASE-1V0
endif


# The XCORE_ARM_PROJECT variable, if set to 1, configures this
# project to create both xCORE and ARM binaries.
XCORE_ARM_PROJECT = 0
Expand Down
4 changes: 4 additions & 0 deletions tests/test_mic_input/src/mic_array_conf.h
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Original file line number Diff line number Diff line change
Expand Up @@ -5,5 +5,9 @@
#define MIC_ARRAY_MAX_FRAME_SIZE_LOG2 7
#define MIC_ARRAY_NUM_MICS 8

#define MIC_ARRAY_CH0 PIN0
#define MIC_ARRAY_CH1 PIN4
#define MIC_ARRAY_CH2 PIN1
#define MIC_ARRAY_CH3 PIN3

#endif /* MIC_ARRAY_CONF_H_ */
157 changes: 135 additions & 22 deletions tests/test_mic_input/src/test_mic_input.xc
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
#include "stdio.h"
#include <stdlib.h>
#include <math.h>
#include <print.h>

#include "mic_array.h"
#include "mic_array_board_support.h"
Expand All @@ -26,15 +27,35 @@
#define FFT_CHANNELS ((COUNT+1)/2)
#define ENABLE_PRECISION_MAXIMISATION 1

on tile[0]: out port p_pdm_clk = XS1_PORT_1E;
#if DDR
on tile[0]: in buffered port:32 p_pdm_mics = XS1_PORT_4D;
on tile[0]: clock pdmclk6 = XS1_CLKBLK_3;
#ifdef XCORE_AI
#define PDM_TILE 1
#else
#define PDM_TILE 0
#endif

// Nominal setting is ref div = 25, fb_div = 1024, op_div = 2
// PCF Freq 0.96GHz
#define PLL_NOM 0xC003FF18 // This is 3.072MHz * 20

#ifdef XCORE_AI
on tile[1]: in buffered port:32 p_pdm_mics = PORT_PDM_DATA;
on tile[1]: in buffered port:32 p_pdm_mics_4b = XS1_PORT_4E;
on tile[1]: out port p_pdm_clk = PORT_PDM_CLK;
on tile[1]: clock pdmclk6 = XS1_CLKBLK_3;
on tile[1]: clock pdmclk = XS1_CLKBLK_2;
on tile[1]: in port p_mclk_in = PORT_MCLK_IN;
#else
on tile[0]: in buffered port:32 p_pdm_mics = XS1_PORT_8B;
on tile[0]: out port p_pdm_clk = XS1_PORT_1L;
#if DDR
on tile[0]: in buffered port:32 p_pdm_mics = XS1_PORT_4E;
on tile[0]: clock pdmclk6 = XS1_CLKBLK_3;
#else
on tile[0]: in buffered port:32 p_pdm_mics = XS1_PORT_8B;
#endif
on tile[0]: in port p_mclk_in = XS1_PORT_1K;
on tile[0]: clock pdmclk = XS1_CLKBLK_2;
#endif
on tile[0]: in port p_mclk = XS1_PORT_1F;
on tile[0]: clock pdmclk = XS1_CLKBLK_2;


int data[8][THIRD_STAGE_COEFS_PER_STAGE*DECIMATION_FACTOR];

Expand All @@ -46,6 +67,31 @@ int your_favourite_window_function(unsigned i, unsigned window_length){
void dsp_bfp_shl2( dsp_complex_t pts[], const uint32_t N,
const int32_t shift_re, const int32_t shift_im );

//Prints an ASCII art spectrum plot of the two mics.
//Linear X axis and Log Y axis
void print_spec(int64_t subband_rms_power[COUNT][FRAME_LENGTH/2]){
int dbs[COUNT][FRAME_LENGTH/2] = {{0}};
for (unsigned band=1;band < FRAME_LENGTH/2;band++){
for(unsigned ch=0;ch<2;ch++){
int64_t b = subband_rms_power[ch][band];
double p = sqrt((double)b);
int db = 10 * log10(p) - 25;
dbs[ch][band] = db;
// printf("db %d: %d\n", band, db);
}
}
for(int dbp = 50; dbp >= 0; dbp--){
for(unsigned ch=0;ch<2;ch++){
for (unsigned band=1;band < FRAME_LENGTH/2;band++){
printf("%s", dbs[ch][band] >= dbp ? "M" : "." );
}
printf(" ");
}
printf("\n");
}
}


void test(streaming chanend c_ds_output[DECIMATOR_COUNT]) {
unsafe{
unsigned buffer;
Expand Down Expand Up @@ -140,6 +186,8 @@ void test(streaming chanend c_ds_output[DECIMATOR_COUNT]) {
printf("\n");
#endif
}
print_spec(subband_rms_power);

if(total_power < 10000.0){
for(unsigned i=0;i<COUNT;i++){
printf("Microphone %d absent\n", i);
Expand Down Expand Up @@ -278,26 +326,85 @@ void test(streaming chanend c_ds_output[DECIMATOR_COUNT]) {
}
}

port p_rst_shared = on tile[1]: XS1_PORT_4F; // Bit 0: DAC_RST_N, Bit 1: ETH_RST_N
port p_i2c = on tile[1]: XS1_PORT_4E; // Bit 0: SCLK, Bit 1: SDA
on tile[PDM_TILE] : clock mclk_internal = XS1_CLKBLK_5;

void set_node_pll_reg(tileref tile_ref, unsigned reg_val){
write_sswitch_reg(get_tile_id(tile_ref), XS1_SSWITCH_PLL_CTL_NUM, reg_val);
}

void run_clock(void) {
configure_clock_xcore(mclk_internal, 10); // 24.576 MHz
configure_port_clock_output(p_mclk_in, mclk_internal);
start_clock(mclk_internal);
}




void set_pll(void) {
set_node_pll_reg(tile[0], PLL_NOM);
run_clock();
}

//Note unusual casting of channel to a port. i.e. we output directly onto channel rather than port
unsafe{
void call_mic_array_pdm_rx(chanend c_mic_dual_pdm, streaming chanend c_4x_pdm_mic_0, streaming chanend c_4x_pdm_mic_1){
unsafe{
buffered port:32 * unsafe p_ptr = ( buffered port:32 * unsafe ) &c_mic_dual_pdm;
//printf("%p\n", *p_ptr);
mic_array_pdm_rx(*p_ptr, c_4x_pdm_mic_0, c_4x_pdm_mic_1);
}

}
}

//This receives PDM on the 1b port and re-packs it so that
//it looks like what would have been rx'ed on a 4b port
//We then punt it over a channel directly to the input to mic_array
void port_shim_1b_4b(in buffered port:32 p_pdm, chanend c_out){
while(1){
unsigned val;
timer t;
unsigned t0, t1;

//GET PORT DATA
asm volatile("in %0, res[%1]" : "=r"(val) : "r"(p_pdm)); //Use ASM so we avoid SETC instruction
// printbinln(val);
t :> t0;

#pragma loop unroll
#pragma unsafe arrays
for(int w = 0; w < 4; w++){
unsigned o = 0;

#pragma loop unroll
#pragma unsafe arrays
for(int i = 0; i < 32; i+=4){
if(val & 0x1){
o |= 0x1 << i;
}
val >>= 1;
}
outuint(c_out, o);
// printbinln(o);

}
t :> t1;
// printf("%d\n", t1-t0);
}
}


int main() {
chan c_sync;
i2c_master_if i_i2c[1];

par {
on tile[1]: i2c_master_single_port(i_i2c, 1, p_i2c, 100, 0, 1, 0);
on tile[1]: {
p_rst_shared <: 0x00;
mabs_init_pll(i_i2c[0], SMART_MIC_BASE);
delay_seconds(5);
c_sync <: 1;
}

on tile[0]:{
c_sync :> int;
stop_clock(pdmclk);
on tile[PDM_TILE]:{

stop_clock(pdmclk);
set_pll();
#if DDR
mic_array_setup_ddr(pdmclk, pdmclk6, p_mclk, p_pdm_clk, p_pdm_mics, 8);
mic_array_setup_ddr(pdmclk, pdmclk6, p_mclk_in, p_pdm_clk, p_pdm_mics, 8);
#else
/* configure_clock_src_divide(pdmclk, p_mclk, 4);
configure_port_clock_output(p_pdm_clk, pdmclk);
Expand All @@ -308,9 +415,15 @@ int main() {

streaming chan c_4x_pdm_mic[DECIMATOR_COUNT];
streaming chan c_ds_output[DECIMATOR_COUNT];
chan c_shim;

par {
#ifdef XCORE_AI
port_shim_1b_4b(p_pdm_mics, c_shim);
call_mic_array_pdm_rx(c_shim, c_4x_pdm_mic[0], c_4x_pdm_mic[1]);
#else
mic_array_pdm_rx(p_pdm_mics, c_4x_pdm_mic[0], c_4x_pdm_mic[1]);
#endif
mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic[0], c_ds_output[0], MIC_ARRAY_NO_INTERNAL_CHANS);
mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic[1], c_ds_output[1], MIC_ARRAY_NO_INTERNAL_CHANS);
test(c_ds_output);
Expand Down