Posted on November 18, 2011 at 17:09My I2C routines are found with stm32F103C6 but when I ' ve make a migration to STM32L my I2C routines are not foun.
The I2C START BIT is not set when I call the I2C_GenerateSTART(I2C1, ENABLE);
Anyone has been in the similar situation or issue?
Please I need any help..
I attach my I2C configuration:
ErrorStatus I2C_Start(void)
{
if (I2C_State == I2C_S_INITING) return ERROR;
if (I2C_State == I2C_S_STOPPING) return ERROR;
if (I2C_State != I2C_S_STOPPED)
I2C_State = I2C_S_INITING;
/* I2C1 Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOB, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Enable APB1 I2C1 reset state */
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, ENABLE);
/* Release I2C1 from reset state */
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, DISABLE);
/* Enable the I2C EV Interrupt */
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = I2C1_EV_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable the I2C ER Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = I2C1_ER_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* I2C1 Init */
I2C_InitTypeDef I2C_InitStructure;
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 100000;
I2C_Init(I2C1, &I2C_InitStructure);
I2C_Cmd(I2C1, ENABLE);
I2C_State = I2C_S_WAITING;
return SUCCESS;
}
Also before the startgenerate call I make:
/* Interruption enabled */
I2C_ITConfig(I2C1, I2C_IT_EVT, ENABLE);
I2C_ITConfig(I2C1,I2C_IT_BUF, ENABLE);
I2C_ITConfig(I2C1,I2C_IT_ERR, ENABLE);
Thanks in advance,
