Part Number: TMS320F280025C
Hi Dear ,
we now use the I2C module for our new project, and we import your example project: i2c_ex5_master_slave_interrupt .
and I find that you SDA , SCL pin were set as GPIO_PIN_TYPE_PULLUP(pull push), and could you tell me why not set as GPIO_PIN_TYPE_OD (open Drain)
SDA , SCL pin set in your example as follows :
GPIO_setDirectionMode(DEVICE_GPIO_PIN_SDAA, GPIO_DIR_MODE_IN);
GPIO_setPadConfig(DEVICE_GPIO_PIN_SDAA, GPIO_PIN_TYPE_PULLUP);
GPIO_setQualificationMode(DEVICE_GPIO_PIN_SDAA, GPIO_QUAL_ASYNC);
GPIO_setDirectionMode(DEVICE_GPIO_PIN_SCLA, GPIO_DIR_MODE_IN);
GPIO_setPadConfig(DEVICE_GPIO_PIN_SCLA, GPIO_PIN_TYPE_PULLUP);
GPIO_setQualificationMode(DEVICE_GPIO_PIN_SCLA, GPIO_QUAL_ASYNC);
GPIO_setPinConfig(DEVICE_GPIO_CFG_SDAA);
GPIO_setPinConfig(DEVICE_GPIO_CFG_SCLA);
why not set them as follow:
GPIO_setDirectionMode(DEVICE_GPIO_PIN_SDAA, GPIO_DIR_MODE_OUT);
GPIO_setPadConfig(DEVICE_GPIO_PIN_SDAA, GPIO_PIN_TYPE_OD);
GPIO_setQualificationMode(DEVICE_GPIO_PIN_SDAA, GPIO_QUAL_ASYNC);
GPIO_setDirectionMode(DEVICE_GPIO_PIN_SCLA, GPIO_DIR_MODE_OUT);
GPIO_setPadConfig(DEVICE_GPIO_PIN_SCLA, GPIO_PIN_TYPE_OD);
GPIO_setQualificationMode(DEVICE_GPIO_PIN_SCLA, GPIO_QUAL_ASYNC);
GPIO_setPinConfig(DEVICE_GPIO_CFG_SDAA);
GPIO_setPinConfig(DEVICE_GPIO_CFG_SCLA);
please tell ,
Thank you
serena
