请问i2s_read返回的内存指针可以是float类型的数组吗？
Posted: Wed Jan 05, 2022 7:08 pm
Code: Untitled.cpp Select all
#define I2S_READLEN 200
float i2s_buffer_read[I2S_READLEN];
float i2s_buffer_write[I2S_READLEN];
while (true) {
i2s_bytes_read = I2S_READLEN;
i2s_read(I2S_NUM, i2s_buffer_read, I2S_READLEN, &i2s_bytes_read, 100);
/* left channel filter */
for (uint32_t i = 0; i < i2s_bytes_read / 2; i += 2)
{
printf("L: %f\n", i2s_buffer_read[i]);
}
}
打印的内容如下：
- L: -nan
L: -nan
L: -nan
L: -nan
L: -nan
L: -nan
L: -nan
L: -nan
L: 0.000000
L: 0.000000
L: -0.000000
L: 1.965756
L: 1.960534
L: 0.000000
L: -0.000000
L: 1.965756
L: 0.000000
L: 0.000000
L: -0.000000
L: 1.965756
L: 1.960534
L: 0.753641
L: -0.000000