| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #ifndef __PWM_STM32_H__ |
| #define __PWM_STM32_H__ |
| |
| #include <pwm/pwm.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * All HW timers capable of PWM are supported. A maximum of 4 channels per |
| * timer can be configured, depending on the HW timer being used. |
| * |
| * Currently there is no support for complementary outputs. |
| * |
| * MCU_AFIO_PIN_NONE can be used in pwm_configure_channel in order |
| * 'unconfigure' a previously configured PWM IO pin. |
| * |
| * The driver can return one of several error codes in order to aid issue |
| * tracking. |
| * |
| * STM32_PWM_ERR_OK ... no error |
| * STM32_PWM_ERR_NODEV ... no devices available, depending on configuration |
| * up to 3 devices are supported |
| * STM32_PWM_ERR_NOTIM ... no hw timer was specified for initialization |
| * STM32_PWM_ERR_CHAN ... specified channel is not valid for device |
| * STM32_PWM_ERR_FREQ ... either no frequency was specified, or the specified |
| * frequency is higher than the clock frequency |
| * STM32_PWM_ERR_GPIO ... an error occured during IO pin configuration |
| * STM32_PWM_ERR_NOIRQ ... the device was registered without IRQ support but |
| * later cycle and/or sequence support was requested |
| */ |
| |
| #define STM32_PWM_ERR_OK 0 |
| #define STM32_PWM_ERR_NODEV 1 |
| #define STM32_PWM_ERR_NOTIM 2 |
| #define STM32_PWM_ERR_CHAN 3 |
| #define STM32_PWM_ERR_FREQ 4 |
| #define STM32_PWM_ERR_GPIO 5 |
| #define STM32_PWM_ERR_NOIRQ 6 |
| |
| typedef struct stm32_pwm_conf { |
| TIM_TypeDef *tim; |
| uint16_t irq; |
| } stm32_pwm_conf_t; |
| |
| int stm32_pwm_dev_init(struct os_dev *dev, void *struct_stm32_pwm_conf_pointer); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* __PWM_STM32_H__ */ |
