diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/beagle/include/bbb-pwm.h')
| -rw-r--r-- | c/src/lib/libbsp/arm/beagle/include/bbb-pwm.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/c/src/lib/libbsp/arm/beagle/include/bbb-pwm.h b/c/src/lib/libbsp/arm/beagle/include/bbb-pwm.h deleted file mode 100644 index cf5d6fe552..0000000000 --- a/c/src/lib/libbsp/arm/beagle/include/bbb-pwm.h +++ /dev/null @@ -1,178 +0,0 @@ -/** - * @file - * - * @ingroup arm_beagle - * - * @brief BeagleBone Black PWM support definitions. - */ - -/** - * Copyright (c) 2016 Punit Vara <punitvara@gmail.com> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -/** Some constants are taken from - * https://github.com/VegetableAvenger/BBBIOlib/blob/master/BBBio_lib/BBBiolib_PWMSS.h - */ - -#ifndef LIBBSP_ARM_BEAGLE_BBB_PWM_H -#define LIBBSP_ARM_BEAGLE_BBB_PWM_H - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -/** - * @brief BeagleBone Black PWM Macros. - */ -#define BBB_CONTROL_CONF_GPMC_AD(n) (0x800 + (n * 4)) -#define BBB_CONTROL_CONF_LCD_DATA(n) (0x8a0 + (n * 4)) - -/** - * @brief The set of possible PWM subsystem module - * - * Enumerated type to define various instance of pwm module. - */ -typedef enum{ - BBB_PWMSS0 = 0, - BBB_PWMSS1, - BBB_PWMSS2, - BBB_PWMSS_COUNT -}BBB_PWMSS; - -typedef enum{ - BBB_P8_13_2B = 3, - BBB_P8_19_2A, - BBB_P8_45_2A, - BBB_P8_46_2B, - BBB_P8_34_1B, - BBB_P8_36_1A, - BBB_P9_14_1A, - BBB_P9_16_1B, - BBB_P9_21_0B, - BBB_P9_22_0A, - BBB_P9_29_0B, - BBB_P9_31_0A -}bbb_pwm_pin_t; - -#define BBB_P8_13_MUX_PWM 4 -#define BBB_P8_19_MUX_PWM 4 -#define BBB_P8_45_MUX_PWM 3 -#define BBB_P8_46_MUX_PWM 3 -#define BBB_P8_34_MUX_PWM 2 -#define BBB_P8_36_MUX_PWM 2 -#define BBB_P9_14_MUX_PWM 6 -#define BBB_P9_16_MUX_PWM 6 -#define BBB_P9_21_MUX_PWM 3 -#define BBB_P9_22_MUX_PWM 3 -#define BBB_P9_29_MUX_PWM 1 -#define BBB_P9_31_MUX_PWM 1 -#define BBB_PWM_FREQ_THRESHOLD 0.5f - -/** - * @brief BeagleBone Black PWM API. - */ - -/** - * @brief This function intilizes clock for pwm sub system. - * - * @param PWMSS_ID It is the instance number of EPWM of pwm sub system. - * - * @return true if successful - * @return false if not successful - * - **/ -bool beagle_pwm_init(BBB_PWMSS pwmss_id); - -/* PWMSS setting - * set pulse argument of epwm module - * - * @param pwm_id : EPWMSS number , 0~2 - * @param pwm_freq : frequency to be generated - * @param dutyA : Duty Cycle(in percentage) in PWM channel A - * @param dutyB : Duty Cycle(in percentage) in PWM channel B - * - * @return : 1 for success - * @return : 0 for failed - * - * @example : beagle_pwm_configure(0 , 50.0f , 50.0f , 25.0f); // Generate 50HZ pwm in PWM0 , - * // duty cycle is 50% for ePWM0A , 25% for ePWM0B - * - * @Note : - * find an number nearst 65535 for TBPRD , to improve duty precision, - * - * Using big TBPRD can increase the range of CMPA and CMPB , - * and it means we can get better precision on duty cycle. - * - * EX : 20.25% duty cycle - * on TBPRD = 62500 , CMPA = 12656.25 ( .25 rejection) , real duty : 20.2496% (12656 /62500) - * on TBPRD = 6250 , CMPA = 1265.625 ( .625 rejection), real duty : 20.24% (1265 6250) - * on TBPRD = 500 , CMPA = 101.25 ( .25 rejection) , real duty : 20.2% (101/500) - * - * Divisor = CLKDIV * HSPCLKDIV - * 1 TBPRD : 10 ns (default) - * 65535 TBPRD : 655350 ns - * 65535 TBPRD : 655350 * Divisor ns = X TBPRD : Cycle - * - * accrooding to that , we must find a Divisor value , let X nearest 65535 . - * so , Divisor must Nearest Cycle/655350 - */ -int beagle_pwm_configure(BBB_PWMSS pwm_id, float pwm_freq, float duty_a, float duty_b); - -/** - * @brief This API enables the particular PWM module. - * - * @param pwmid It is the instance number of EPWM of pwm sub system. - * - * @return true if successful - * @return false if fail - * - **/ -bool beagle_pwm_enable(BBB_PWMSS pwmid); - -/** - * @brief This API disables the particular PWM module. - * - * @param pwmid It is the instance number of EPWM of pwm sub system. - * - * @return true if successful - * @return false if fail - * - **/ -bool beagle_pwm_disable(BBB_PWMSS pwmid); - -/** - * @brief This function enables pinmuxing for PWM module. - * - * @param pin_no It is individual pin at which freuqency need to be generated. - * It should be according to pwm sub system. - * - * @param pwm_id It is the instance number of EPWM of pwmsubsystem. - * - * @return true if successful - * @return false if fail - * - **/ -bool beagle_pwm_pinmux_setup(bbb_pwm_pin_t pin_no, BBB_PWMSS pwm_id); - -/** - * @brief This function determines whether PWMSS-wide clocks enabled or not. - * - * @param pwmss_id It is the instance number of PWMSS which clocks need to be - * checked. - * - * @return true if successful - * @return false if fail - * - **/ -bool beagle_pwmss_is_running(unsigned int pwmss_id); - - -#ifdef __cplusplus -} -#endif /* __cplusplus */ - -#endif /* LIBBSP_ARM_BEAGLE_BBB_PWM_H */ |