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Initial commit for the firmware. Used the 20090306_ela version as baseline.

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It is identical to the popular 20081211, with the doob addition (20090301), a
linux client, and two additional commands for LF analysis. Let me know if
you find issues here!
This commit is contained in:
edouard@lafargue.name 2009-04-09 06:43:20 +00:00
commit 6658905f18
91 changed files with 16661 additions and 0 deletions
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105
fpga/testbed_lo_read.v Normal file
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`include "lo_read.v"
/*
pck0 - input main 24Mhz clock (PLL / 4)
[7:0] adc_d - input data from A/D converter
lo_is_125khz - input freq selector (1=125Khz, 0=136Khz)
pwr_lo - output to coil drivers (ssp_clk / 8)
adc_clk - output A/D clock signal
ssp_frame - output SSS frame indicator (goes high while the 8 bits are shifted)
ssp_din - output SSP data to ARM (shifts 8 bit A/D value serially to ARM MSB first)
ssp_clk - output SSP clock signal 1Mhz/1.09Mhz (pck0 / 2*(11+lo_is_125khz) )
ck_1356meg - input unused
ck_1356megb - input unused
ssp_dout - input unused
cross_hi - input unused
cross_lo - input unused
pwr_hi - output unused, tied low
pwr_oe1 - output unused, undefined
pwr_oe2 - output unused, undefined
pwr_oe3 - output unused, undefined
pwr_oe4 - output unused, undefined
dbg - output alias for adc_clk
*/
module testbed_lo_read;
reg pck0;
reg [7:0] adc_d;
reg lo_is_125khz;
wire pwr_lo;
wire adc_clk;
wire ck_1356meg;
wire ck_1356megb;
wire ssp_frame;
wire ssp_din;
wire ssp_clk;
wire ssp_dout;
wire pwr_hi;
wire pwr_oe1;
wire pwr_oe2;
wire pwr_oe3;
wire pwr_oe4;
wire cross_lo;
wire cross_hi;
wire dbg;
lo_read #(5,200) dut(
.pck0(pck0),
.ck_1356meg(ck_1356meg),
.ck_1356megb(ck_1356megb),
.pwr_lo(pwr_lo),
.pwr_hi(pwr_hi),
.pwr_oe1(pwr_oe1),
.pwr_oe2(pwr_oe2),
.pwr_oe3(pwr_oe3),
.pwr_oe4(pwr_oe4),
.adc_d(adc_d),
.adc_clk(adc_clk),
.ssp_frame(ssp_frame),
.ssp_din(ssp_din),
.ssp_dout(ssp_dout),
.ssp_clk(ssp_clk),
.cross_hi(cross_hi),
.cross_lo(cross_lo),
.dbg(dbg),
.lo_is_125khz(lo_is_125khz)
);
integer idx, i;
// main clock
always #5 pck0 = !pck0;
//new A/D value available from ADC on positive edge
task crank_dut;
begin
@(posedge adc_clk) ;
adc_d = $random;
end
endtask
initial begin
// init inputs
pck0 = 0;
adc_d = 0;
// simulate 4 A/D cycles at 134Khz
lo_is_125khz=0;
for (i = 0 ; i < 4 ; i = i + 1) begin
crank_dut;
end
// simulate 4 A/D cycles at 125Khz
lo_is_125khz=1;
for (i = 0 ; i < 4 ; i = i + 1) begin
crank_dut;
end
$finish;
end
endmodule // main