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Merge pull request #4318 from DavidLin1577/patch-4 

[bsp]Mini optimized the drv_sound.c
This commit is contained in:
Bernard Xiong 2021-02-12 23:07:50 +08:00 committed by GitHub
parent 122a1753d5 79267212ef
commit eda10bb966
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 5 deletions
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8
bsp/bluetrum/ab32vg1-ab-prougen/board/ports/audio/drv_sound.c
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@ -43,18 +43,18 @@ void adpll_init(uint8_t out_spr)
PLL1CON |= BIT(18); //pll1 sdm enable
if (out_spr) {
CLKCON2 |= BIT(4) | BIT(7); //adpll_div = 10
CLKCON2 |= BIT(4) | BIT(7); //adpll_div = 10
PLL1DIV = (245.76 * 65536) / 26; //245.76Mhz for 48K
// sys.aupll_type = 1;
} else {
CLKCON2 |= BIT(5) | BIT(7); //adpll_div = 11
CLKCON2 |= BIT(5) | BIT(7); //adpll_div = 11
PLL1DIV = (248.3712 * 65536) / 26; //248.3712MHz for 44.1k
// sys.aupll_type = 0;
}
hal_mdelay(1);
PLL1CON |= BIT(20); //update pll1div
PLL1CON |= BIT(6); //enable analog pll1
hal_mdelay(1); //wait pll1 stable
hal_mdelay(1); //wait pll1 stable
}
void dac_start(void)
@ -453,7 +453,6 @@ static int rt_hw_sound_init(void)
return -RT_ENOMEM;
}
rt_memset(tx_fifo, 0, TX_FIFO_SIZE);
snd_dev.tx_fifo = tx_fifo;
/* 分配 DMA 搬运 buffer */
@ -463,7 +462,6 @@ static int rt_hw_sound_init(void)
return -RT_ENOMEM;
}
rt_memset(rx_fifo, 0, TX_FIFO_SIZE);
snd_dev.rx_fifo = rx_fifo;
/* init default configuration */