stdlib bug - STM32F4 SPL (Standard Peripheral Library)
in stdlib version1.9.0, void I2S_Init(SPI_TypeDef* SPIx, I2S_InitTypeDef* I2S_InitStruct) { uint16_t tmpreg = 0, i2sdiv = 2, i2sodd = 0, packetlength = 1; uint32_t tmp = 0, i2sclk = 0; #ifndef I2S_EXTERNAL_CLOCK_VAL uint32_t pllm = 0, plln = 0,...