Hello Holger,
Please kindly refer my comments as below.
1. Is it possible to change PDOs dynamically at runtime?
>> Yes, it is possible. Not only by HPI interface, you could change it in firmware directly by adding a pieces of codes. And trigger the PDOs change as per your design.
2. Are there any existing code examples for this purpose?
>> 1) HPI do not have example code could be shared.
2) The example code for PDO change could be refer below:
void change_pdos(void)
{
pd_do_t SRC_PDO[2];
SRC_PDO[0].val = 0x0B0190F0;
SRC_PDO[1].val = 0x0002D0DE;
/* New 5V/2.4A(0B0190F0);9V/2.22A(0002D0DE) add PDO */
// SRC_PDO[2].val = 0x0004B064;
// SRC_PDO[3].val = 0xC0761E3C;
// SRC_PDO[4].val = 0xC0DC1E3C;
/**
* @brief This function updates the source PDOs at runtime thereby overriding
* the source PDOs in the configuration table.
* @param port Port index.
* @param count Count of PDOs.
* @param pdo Pointer to the PDO array.
* @return CCG_STAT_SUCCESS if operation is successful, CCG_STAT_BAD_PARAM
* otherwise.
*/
dpm_update_src_cap(0, 2, SRC_PDO);
/**
* @brief This function updates the source PDO mask at runtime thereby
* overriding the source PDO mask in the configuration table.
* @param port Port index.
* @param mask PDO mask.
* @return CCG_STAT_SUCCESS if operation is successful, CCG_STAT_BAD_PARAM
* otherwise.
*/
dpm_update_src_cap_mask (0, 0x03);
dpm_pd_command (0, DPM_CMD_SRC_CAP_CHNG, NULL,NULL); //Send PD command about the changes in source capabilities
}
3. Is there a more detailed HPI interface description?
>> The HPI specification could get it from local Cypress/Infineon FAE, please feel free to contact them.
Best Regards,
Lisa
