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Temporarily reverted Krishna's commit - was causing audio issues from Mics on array ref v1.0

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This commit is contained in:
Ross Owen
2016-01-12 13:43:22 +00:00
parent fc6a4ef8fc
commit 4743f90747
1 changed files with 2 additions and 14 deletions
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16
module_usb_audio/pdm_mics/pcm_pdm_mic.xc
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@@ -21,12 +21,8 @@
/* Hardware resources */ /* Hardware resources */
in port p_pdm_clk = PORT_PDM_CLK; in port p_pdm_clk = PORT_PDM_CLK;
in buffered port:32 p_pdm_mics = PORT_PDM_DATA; in buffered port:32 p_pdm_mics = PORT_PDM_DATA;
#if AUDIO_IO_TILE != PDM_TILE
in port p_mclk = PORT_PDM_MCLK; in port p_mclk = PORT_PDM_MCLK;
#else clock pdmclk = on tile[PDM_TILE]: XS1_CLKBLK_3;
// Use 'p_mclk_in' shared by I2S
#endif
clock pdmclk = on tile[PDM_TILE]: XS1_CLKBLK_4;
/* User hooks */ /* User hooks */
unsafe void user_pdm_process(frame_audio * unsafe audio, int output[]); unsafe void user_pdm_process(frame_audio * unsafe audio, int output[]);
@@ -101,15 +97,7 @@ void pcm_pdm_mic(chanend c_pcm_out)
streaming chan c_ds_output[2]; streaming chan c_ds_output[2];
/* TODO, always run mics at 3MHz */ /* TODO, always run mics at 3MHz */
/* Assuming MCLK is 24.576 MHz */ configure_clock_src_divide(pdmclk, p_mclk, 2);
#if AUDIO_IO_TILE != PDM_TILE
configure_clock_src_divide(pdmclk, p_mclk, 4);
#else
unsigned port_id, divide = 4;
asm("ldw %0, dp[p_mclk_in]":"=r"(port_id));
asm("setclk res[%0], %1"::"r"(pdmclk), "r"(port_id));
asm("setd res[%0], %1"::"r"(pdmclk), "r"(divide));
#endif
configure_port_clock_output(p_pdm_clk, pdmclk); configure_port_clock_output(p_pdm_clk, pdmclk);
configure_in_port(p_pdm_mics, pdmclk); configure_in_port(p_pdm_mics, pdmclk);
start_clock(pdmclk); start_clock(pdmclk);