Tool/software: TI-RTOS
-CCS v8
-tirtos_tivac_2_16_01_14
-TivaWare_C_Series-2.1.4.178
-xdctools_3_32_00_06
I am new to RTOS, I have been banging my head against the brick wall for a while trying to figure out what information it wants to configure the PWM's through RTOS. I can't find any examples/instruction on it. I need to use 6 PWM outputs BTW. I am just trying to configure one first, PWM_OUT_1 because I am leaving the LED flashing for now, and that uses the same as PWM_OUT_0.
I got the PWM_params down, that is in the example in the documentation. But I don't know how to configure the PWMTiva_HWAttrs and PWM_Config pointers. As in I don't know where to start.
I got a lot of good info from this thread but he is using MSP and all the MSP jargon makes it very hard to follow everything.
I have all the needed header files I think.
//---------------------------------------- // BIOS header files //---------------------------------------- #include <xdc/std.h> //mandatory - have to include first, for BIOS types #include <ti/sysbios/BIOS.h> //mandatory - if you call APIs like BIOS_start() #include <xdc/runtime/Log.h> //needed for any Log_info() call #include <xdc/cfg/global.h> //header file for statically defined objects/handles #include <EK_TM4C1294XL.h> //------------------------------------------ // TivaWare Header Files //------------------------------------------ #include <stdint.h> #include <stdbool.h> #include "inc/hw_types.h" #include "inc/hw_memmap.h" #include "driverlib/pin_map.h" #include "driverlib/sysctl.h" #include "driverlib/gpio.h" #include "inc/hw_ints.h" #include "driverlib/interrupt.h" #include "driverlib/timer.h" #include "driverlib/pwm.h" #include "Board.h" #include <ti/drivers/GPIO.h> #include <ti/drivers/PWM.h> #include <ti/drivers/pwm/PWMTiva.h>
I think I finally got the hang of the PWMTiva_HWAttrs info from that post I mentioned. I just put it in my main.c file for now, does it have to be in a different file?
const PWMTiva_HWAttrs intensity_pwm_HW = {
{
.baseAddr = PWM0_BASE,
.pwmGenOpts = PWM_OUT_1,
.pwmOutput = PWM_GEN_MODE_DOWN | PWM_GEN_MODE_DBG_RUN
}
};
const PWM_Config intensity_pwm_cfg =
{
{
.fxnTablePtr = &intensity_pwm_fxnTable,
.hwAttrs = &intensity_pwm_HW,
.object = &intensity_pwmObjects
}
};
But I don't know what it is asking for and how to send it the parameters for the PWM_Config information. Is it something that is automatically generated or do I need to create the fxnTable, Objects, and does it point to the HWAttrs constant that I created before the PWM_Config?
