i2s_pdm sample
EXAMPLE_SINE_WAVE_LEN
is only used within i2s_pdm sample.
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ESP-IDF Framework and Examples
i2s_pdm sample
EXAMPLE_SINE_WAVE_LEN
EXAMPLE_SINE_WAVE_LEN macro
Syntax
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Summary
Declaration
from
i2s_pdm_tx.c:24
#define
EXAMPLE_SINE_WAVE_LEN
(
tone
)
(
uint32_t
)
(
(
EXAMPLE_PDM_TX_FREQ_HZ
/
(
float
)
tone
)
+
0.5
)
Arguments
Argument
tone
Examples
References
from
examples
Code
Location
#define
EXAMPLE_SINE_WAVE_LEN
(
tone
)
(
uint32_t
)
(
(
EXAMPLE_PDM_TX_FREQ_HZ
/
(
float
)
tone
)
+
0.5
)
// The sample point number per sine wave to generate the tone
i2s_pdm_tx.c:24
int
tone_point
=
EXAMPLE_SINE_WAVE_LEN
(
tone
[
tone_select
]
[
song
[
cnt
]
-
1
]
)
;
i2s_pdm_tx.c:99
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