I am trying to measure voltage on pc1 and pass the reading on to my display but all i get displayed is what appear to be random characters i am using a CONST INT to pass the data threw but i may be passing the incorrect data could some one have a look at my code and tell me there i am going wrong..Please
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ch.h"
#include "hal.h"
#include "gfx.h"
#include "dawetecsml.h"
static gdispImage myImage;
const int *msg;
static void pwmpcb(PWMDriver *pwmp);
static void adccb(ADCDriver *adcp, adcsample_t *buffer, size_t n);
/* Total number of channels to be sampled by a single ADC operation.*/
#define ADC_GRP1_NUM_CHANNELS 2
/* Depth of the conversion buffer, channels are sampled four times each.*/
#define ADC_GRP1_BUF_DEPTH 4
/*
* ADC samples buffer.
*/
static adcsample_t samples[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
/*
* ADC conversion group.
* Mode: Linear buffer, 4 samples of 2 channels, SW triggered.
* Channels: IN11 (48 cycles sample time)
* Sensor (192 cycles sample time)
*/
static const ADCConversionGroup adcgrpcfg = {
FALSE,
ADC_GRP1_NUM_CHANNELS,
adccb,
NULL,
/* HW dependent part.*/
0,
ADC_CR2_SWSTART,
ADC_SMPR1_SMP_AN11(ADC_SAMPLE_56) | ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_144),
0,
ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),
0,
ADC_SQR3_SQ2_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ1_N(ADC_CHANNEL_SENSOR)
};
/*
* PWM configuration structure.
* Cyclic callback enabled, channels 1 and 4 enabled without callbacks,
* the active state is a logic one.
*/
static PWMConfig pwmcfg = {
10000, /* 10KHz PWM clock frequency. */
10000, /* PWM period 1S (in ticks). */
pwmpcb,
{
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_DISABLED, NULL},
{PWM_OUTPUT_DISABLED, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL}
},
/* HW dependent part.*/
0
};
/*
* PWM cyclic callback.
* A new ADC conversion is started.
*/
static void pwmpcb(PWMDriver *pwmp) {
(void)pwmp;
/* Starts an asynchronous ADC conversion operation, the conversion
will be executed in parallel to the current PWM cycle and will
terminate before the next PWM cycle.*/
chSysLockFromIsr();
adcStartConversionI(&ADCD1, &adcgrpcfg, samples, ADC_GRP1_BUF_DEPTH);
chSysUnlockFromIsr();
}
/*
* ADC end conversion callback.
* The PWM channels are reprogrammed using the latest ADC samples.
* The latest samples are transmitted into a single SPI transaction.
*/
void adccb(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
(void) buffer; (void) n;
/* Note, only in the ADC_COMPLETE state because the ADC driver fires an
intermediate callback when the buffer is half full.*/
if (adcp->state == ADC_COMPLETE) {
adcsample_t avg_ch1, avg_ch2;
/* Calculates the average values from the ADC samples.*/
avg_ch1 = (samples[0] + samples[2] + samples[4] + samples[6]) / 4;
avg_ch2 = (samples[1] + samples[3] + samples[5] + samples[7]) / 4;
chSysLockFromIsr();
msg = avg_ch1;
/* Changes the channels pulse width, the change will be effective
starting from the next cycle.*/
pwmEnableChannelI(&PWMD4, 0, PWM_FRACTION_TO_WIDTH(&PWMD4, 4096, avg_ch1));
pwmEnableChannelI(&PWMD4, 3, PWM_FRACTION_TO_WIDTH(&PWMD4, 4096, avg_ch2));
/* SPI slave selection and transmission start.*/
chSysUnlockFromIsr();
}
}
/*
* Application entry point.
*/
int main(void) {
halInit();
chSysInit();
//font Setup
font_t font1 = gdispOpenFont("Larger");
font_t font2 = gdispOpenFont("UI1");
//reset lcd
palClearPad(GPIOC, GPIOC_PIN6);
chThdSleepMilliseconds(100);
palSetPad(GPIOC, GPIOC_PIN6);
//SET PINS
palSetPadMode(GPIOD, 13, PAL_STM32_PUDR_PULLDOWN);
/* Initialize and clear the display */http://www.google.com.au/#output=search&sclient=psy-ab&q=send+data+to+main+from+void&oq=send+data+to+main+from+void&gs_l=hp.3...1408.8700.1.8855.27.26.0.1.1.0.351.6357.2-23j2.25.0...0.0...1c.1.12.hp.8UokiyYaJkU&psj=1&bav=on.2,or.r_qf.&bvm=bv.45960087,d.dGI&fp=f4974ed63c241413&biw=1027&bih=423
gdispInit();
gdispClear(Black);
// Splash Screen
gdispImageSetMemoryReader(&myImage, dawetecsml);
gdispImageOpen(&myImage);
gdispImageDraw(&myImage, 120, 150, myImage.width, myImage.height, 0, 0);
gdispImageClose(&myImage);
chThdSleepMilliseconds(5000);
gdispClear(Black);
//main menu
gdispDrawString(10, 1, "DaweTec Titan200", font1, White);
gdispDrawString(10, 470, "Version 1.1", font1, White);
gdispDrawString(680, 1, "Battery Level 100%", font1 , White);
gdispDrawString(10, 235, "Detection Level:",font2 , White);
/*
* Initializes the ADC driver 1 and enable the thermal sensor.
* The pin PC0 on the port GPIOC is programmed as analog input.
*/
adcStart(&ADCD1, NULL);
palSetPadMode(GPIOC, 1, PAL_MODE_INPUT_ANALOG);
/*
* Initializes the PWM driver 4, routes the TIM4 outputs to the board LEDs.
*/
pwmStart(&PWMD4, &pwmcfg);
//PLUSE START
while ( TRUE ) {
int gpioState = palReadPad(GPIOA, GPIOA_BUTTON);
if (!gpioState) {
gdispDrawBox(10, 150, 400, 10, Black);
gdispFillArea(10, 150, 400, 10, Black);
gdispDrawString(10, 150, msg,font2, White);
gdispDrawBox(10, 220, 90, 10, Black);
gdispFillArea(10, 220, 90, 10, Black);
gdispDrawString(10, 220, "Detection OFF",font2 , White);
chThdSleepMilliseconds(500);
}
else if ( gpioState ) {
gdispDrawBox(10, 220, 90, 10, Black);
gdispFillArea(10, 220, 90, 10, Black);
gdispDrawString(10, 220, "Detection ON",font2 , White);
palSetPad(GPIOD,13);
chThdSleepMilliseconds(2000);
palClearPad(GPIOD,13);
chThdSleepMilliseconds(2000);
}
}
while(TRUE) {
chThdSleepMilliseconds(500);
}
}
