diff options
Diffstat (limited to 'src/fsm/audio.c')
| -rw-r--r-- | src/fsm/audio.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/fsm/audio.c b/src/fsm/audio.c index 02123fd..e74e93a 100644 --- a/src/fsm/audio.c +++ b/src/fsm/audio.c @@ -28,14 +28,11 @@ void InitializeAudio(int plln, int pllr, int i2sdiv, int i2sodd) { DMARunning = false; // Turn on peripherals. - RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); - RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE); - RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); - RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE); + // Assume GPIOA,B,C,D already on RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE); - i2c_init(); + // Assume I2C is set up // Configure reset pin. GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;; @@ -229,9 +226,13 @@ void DMA1_Stream7_IRQHandler() { } } +// Warning: don't i2c_write call from IRQ handler ! static void WriteRegister(uint8_t address, uint8_t value) { const uint8_t device = 0x4a; const uint8_t data[2] = {address, value}; + i2c_transaction_start(); i2c_write(device, data, 2); + i2c_transaction_end(); } + |