I can't seem to get anything out of my I2C port. The is the first time I've done it using the standard peripheral library. I seem to get about 2clks at the start when monitoring it with an oscilloscope, then nothing. It is as if there is a peripheral clock I haven't turned on or something...?
Enclosed is initialisation code etc.
#defines etc:
//I2C Pin Configuration
#define I2C1_CLK RCC_APB1Periph_I2C1
#define I2C1_SDA_PIN GPIO_Pin_7
#define I2C1_GPIO_SDA_PORT GPIOB
#define I2C1_GPIO_SDA_CLK RCC_AHBPeriph_GPIOB
#define I2C1_SDA_SOURCE GPIO_PinSource7
#define I2C1_SDA_AF GPIO_AF_1
#define I2C1_SCL_PIN GPIO_Pin_6
#define I2C1_GPIO_SCL_PORT GPIOB
#define I2C1_GPIO_SCL_CLK RCC_AHBPeriph_GPIOB
#define I2C1_SCL_SOURCE GPIO_PinSource6
#define I2C1_SCL_AF GPIO_AF_1
//INITIALIZE THE IO FOR THE DAC
void DAC_IO_INIT()
{
I2C_InitTypeDef I2C_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
//Low Level Initialization:
/* AD5693_I2C_SCL_GPIO_CLK, AD5693_I2C_SDA_GPIO_CLK */
RCC_AHBPeriphClockCmd(I2C1_GPIO_SDA_CLK | I2C1_GPIO_SCL_CLK, ENABLE);
/* AD5693_I2C Periph clock enable */
RCC_APB1PeriphClockCmd(I2C1_CLK, ENABLE);
/* Configure the I2C clock source. The clock is derived from the HSI */
RCC_I2CCLKConfig(RCC_I2C1CLK_HSI);
/* Connect PXx to I2C_SCL */
GPIO_PinAFConfig(I2C1_GPIO_SCL_PORT, I2C1_SCL_SOURCE, I2C1_SCL_AF);
/* Connect PXx to I2C_SDA */
GPIO_PinAFConfig(I2C1_GPIO_SDA_PORT, I2C1_SDA_SOURCE, I2C1_SDA_AF);
/* Configure AD5693 I2C pins: SCL */
GPIO_InitStructure.GPIO_Pin = I2C1_SCL_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//NOPULL
GPIO_Init(I2C1_GPIO_SCL_PORT, &GPIO_InitStructure);
/* Configure AD5693_I2C pins: SDA */
GPIO_InitStructure.GPIO_Pin = I2C1_SDA_PIN;
GPIO_Init(I2C1_GPIO_SDA_PORT, &GPIO_InitStructure);
/* AD5693_I2C configuration */
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
I2C_InitStructure.I2C_DigitalFilter = 0x00;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;//Master - Single byte at a time
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_Timing = AD5693_I2C_TIMING;
/* Apply AD5693_I2C configuration after enabling it */
I2C_Init(AD5693_I2C, &I2C_InitStructure);
/* AD5693_I2C Peripheral Enable */
I2C_Cmd(AD5693_I2C, ENABLE);
and
