Hi STteam,
my name is Himavanth, working as an Embedded Engineer at Supralax Electronics Pvt.Ltd. please have a look at the problem.
@brief : We are working PD source solution(i.e. 60Watt (20V @ 3A max)) using STM32G081RBT6. We are taking USB-PD_Provider_1port as an Base reference project.
@Reference : I have gone through each and every line of UM2552 reference manual I found really good information to setup the USBPD stack.
@context:
- I am not able to find the PDO initialization Even for provided example (i.e USB-PD_Provider_1port )from the STM.
- I found the code template(attached below)regarding PDO definition and initialization of PDO. But I couldn't find any initialization process for PORT0_PDO_ListSRC(As control going to #ifndef __USBPD_PWR_IF_C loop not to else loop)
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file usbpd_pdo_defs.h
* @author MCD Application Team
* @brief Header file for definition of PDO/APDO values for 2 ports(DRP/SNK) configuration
******************************************************************************
*
* Copyright (c) 2018 STMicroelectronics. All rights reserved.
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* USER CODE END Header */
#ifndef __USBPD_PDO_DEF_H_
#define __USBPD_PDO_DEF_H_
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Define ------------------------------------------------------------------*/
/* USER CODE BEGIN Define */
/* USER CODE END Define */
/* Exported typedef ----------------------------------------------------------*/
/* USER CODE BEGIN typedef */
/**
* @brief USBPD Port PDO Structure definition
*
*/
/* USER CODE END typedef */
/* Exported define -----------------------------------------------------------*/
/* USER CODE BEGIN Exported_Define */
#define USBPD_CORE_PDO_SRC_FIXED_MAX_CURRENT 3
#define USBPD_CORE_PDO_SNK_FIXED_MAX_CURRENT 1500
/* USER CODE END Exported_Define */
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN constants */
/* USER CODE END constants */
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN macro */
/* USER CODE END macro */
/* Exported variables --------------------------------------------------------*/
/* USER CODE BEGIN variables */
/* USER CODE END variables */
#ifndef __USBPD_PWR_IF_C
extern const uint32_t PORT0_PDO_ListSRC[USBPD_MAX_NB_PDO];
extern const uint32_t PORT0_PDO_ListSNK[USBPD_MAX_NB_PDO];
extern const uint32_t PORT1_PDO_ListSRC[USBPD_MAX_NB_PDO];
extern const uint32_t PORT1_PDO_ListSNK[USBPD_MAX_NB_PDO];
#else
/* Definition of Source PDO for Port 0 */
const uint32_t PORT0_PDO_ListSRC[USBPD_MAX_NB_PDO] =
{
/* PDO 1 */
(0x0201912CU),
/* PDO 2 */
(0x00000000U),
/* PDO 3 */
(0x00000000U),
/* PDO 4 */
(0x00000000U),
/* PDO 5 */
(0x00000000U),
/* PDO 6 */
(0x00000000U),
/* PDO 7 */
(0x00000000U)
};
/* Definition of Sink PDO for Port 0 */
const uint32_t PORT0_PDO_ListSNK[USBPD_MAX_NB_PDO] =
{
/* PDO 1 */
(0x00000000U),
/* PDO 2 */
(0x00000000U),
/* PDO 3 */
(0x00000000U),
/* PDO 4 */
(0x00000000U),
/* PDO 5 */
(0x00000000U),
/* PDO 6 */
(0x00000000U),
/* PDO 7 */
(0x00000000U)
};
#endif
/* Exported functions --------------------------------------------------------*/
/* USER CODE BEGIN functions */
/* USER CODE END functions */
#ifdef __cplusplus
}
#endif
#endif /* __USBPD_PDO_DEF_H_ */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@Quetions :
- I am not able to find the PDO initialization. please let me know How I can initialize the PDO's?
- I have gone through the numbered steps stated in UM2552 page No. 14. I compared with code from PD example code(USB-PD_Provider_1port ) I found step 2, 4 and 5 are initialized properly. Even I am done with changes mentioned in the UM2552 reference manual for step 3.
- I couldn't under stand how to initialize the USBPD_StatusTypeDef USBPD_PWR_IF_Init(void). please help me out to initialize the function stated above. please help me out to get out of this problem.
Note : I couldn't initialize the PDO's as stated in UM2552 page No. 21
Thanks & Regards
Himavanth
