Initial checkin of majority of design tree

Author: danbedard

README

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+/*
+ ============================================================================
+ Name        : application.c
+ Author      : Daniel Bedard
+ Version     :
+ Copyright   : Your copyright notice
+ Description : Hello World in C, Ansi-style
+ ============================================================================
+ */
+
+#include <sys/termios.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#define VERSION_H 0
+#define VERSION_L 1
+#define OVF_FLAG 7
+#define TIME_FLAG 6 
+#define DONE_FLAG 5
+
+#define BAUDRATE B1000000
+#define V_FULLSCALE 26.52
+#define R_SENSE 0.00422 /* found empirically */
+#define I_FULLSCALE .10584
+
+int g_serial_fd;
+FILE *g_serial_fp;
+struct termios g_oldtio, g_newtio;
+
+int powermon_init();
+
+void cleanup() {
+	/*		fprintf (stderr, "cleanup\n");*/
+	powermon_init();
+	tcflush(g_serial_fd, TCIFLUSH);
+	tcsetattr(g_serial_fd, TCSANOW, &g_oldtio);
+	close(g_serial_fd);
+}
+
+int powermon_init() {
+	char buffer[32];
+	fprintf(g_serial_fp, "d\n");
+	usleep(100000);
+	fflush(g_serial_fp);
+	usleep(100000);
+	tcflush(g_serial_fd, TCIFLUSH);
+	fprintf(g_serial_fp, "\n");
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	return strcmp(buffer, "OK\r\n");
+}
+
+int powermon_set_mask(uint16_t mask) {
+	char buffer[32];
+	unsigned int length;
+	unsigned int setval;
+	length = sprintf(buffer, "m %u\n", mask);
+	fwrite(buffer, 1, length, g_serial_fp);
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	sscanf(buffer, "M=%u\r", &setval);
+	printf("Mask set to %u.\n", setval);
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	return strcmp(buffer, "OK\r\n");
+}
+
+int powermon_set_samples(uint16_t interval, uint32_t num_samples) {
+	char buffer[32];
+	unsigned int length;
+	unsigned int set_interval, set_num_samples;
+	length = sprintf(buffer, "s %u %u\n", interval, num_samples);
+	fwrite(buffer, 1, length, g_serial_fp);
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	sscanf(buffer, "S=%u,%u\r", &set_interval, &set_num_samples);
+	printf("Sample interval set to %u.  %u sample", set_interval,
+			set_num_samples);
+	if (set_num_samples != 1)
+		printf("s");
+	printf(" to be collected.\n");
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	return strcmp(buffer, "OK\r\n");
+}
+
+int powermon_set_time(uint32_t now) {
+	char buffer[32];
+	unsigned int length;
+	unsigned int setval;
+	length = sprintf(buffer, "t %u\n", now);
+	fwrite(buffer, 1, length, g_serial_fp);
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	sscanf(buffer, "T=%u\r", &setval);
+	printf("Time set to %u.\n", setval);
+	fgets(buffer, sizeof(buffer), g_serial_fp);
+	return strcmp(buffer, "OK\r\n");
+}
+
+int powermon_get_samples() {
+	unsigned char buffer[4];
+	unsigned int time; /* , reading; */
+	uint16_t voltage, current;
+	uint8_t flags, sensor;
+	double v_double, i_double;
+	fprintf(g_serial_fp, "e\n");
+	for (;;) {
+		fread(buffer, 1, 4, g_serial_fp);
+		flags = buffer[0];
+		/*reading = (((uint32_t)buffer[0] << 24) | ((uint32_t)buffer[1] << 16)
+				| ((uint32_t)buffer[2] << 8) | ((uint32_t)buffer[3]));
+		printf("bytes: %#x\n", reading);*/
+		if (!(flags&(1<<TIME_FLAG)) && (flags&(1<<DONE_FLAG))) {
+			break;
+		}
+		if(flags& (1 << OVF_FLAG)) {
+			printf("*");
+		}
+		if (flags & (1 << TIME_FLAG)) {
+			time = (((uint32_t)buffer[0] << 24) | ((uint32_t)buffer[1] << 16)
+					| ((uint32_t)buffer[2] << 8) | ((uint32_t)buffer[3]))
+					& 0x3FFFFFFF;
+			printf("timestamp: %u\n", time);
+		} else {
+			sensor = (uint8_t)buffer[0] & 0x0F;
+			voltage = ((uint16_t)buffer[1] << 4) | ((buffer[3] >> 4) & 0x0F);
+			current = ((uint16_t)buffer[2] << 4) | (buffer[3] & 0x0F);
+			v_double = (double)voltage / 4096 * V_FULLSCALE;
+			i_double = (double)current / 4096 * I_FULLSCALE / R_SENSE;
+			printf("sensor = %d, voltage = %fV, current = %fA\n", sensor, v_double, i_double);
+		}
+	}
+	return 0;
+}
+
+int configure_tty(const char *dev) {
+	g_serial_fd = open(dev, O_RDWR | O_NOCTTY);
+	if (g_serial_fd < 0) {
+		perror(dev);
+		return 1;
+	}
+	if ((g_serial_fp = fdopen(g_serial_fd, "r+")) == NULL) {
+		perror("fdopen()");
+		return 2;
+	}
+	tcgetattr(g_serial_fd, &g_oldtio); /* save current port settings */
+	bzero(&g_newtio, sizeof (g_newtio));
+
+	/* 
+	 CRTSCTS == hardware flow control
+	 CS8 = 8 bits
+	 CLOCAL = ignore modem control lines
+	 CREAD = enable receiver
+	 B38400 = baud rate
+	 */
+	g_newtio.c_iflag = IGNPAR;
+	g_newtio.c_cflag = BAUDRATE | CS8 | CSTOPB | CLOCAL | CREAD;
+	g_newtio.c_oflag = 0;
+
+	/* set input mode (non-canonical, no echo,...) */
+	g_newtio.c_lflag = 0;
+
+	g_newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
+	g_newtio.c_cc[VMIN] = 1; /* blocking read until 1 char received */
+
+	tcflush(g_serial_fd, TCIFLUSH);
+	tcsetattr(g_serial_fd, TCSANOW, &g_newtio);
+
+	return 0;
+}
+
+int main(int argc, char **argv) {
+	char dev[256];
+	uint16_t sensor_mask;
+	uint16_t sample_period;
+	uint32_t num_samples = 0;
+	if ((argc < 4) || (argc > 5)) {
+		fprintf (stderr,
+			 "Usage:\n %s <port_dev> <mask> <sample_pd> [<num_samples>]\n\n",
+			 argv[0]);
+		fprintf (stderr, "Example:\n%s /dev/ttyUSB1 1024 1 200\n", argv[0]);
+		return 1;
+	}
+	strcpy (dev, argv[1]);
+	sensor_mask = atoi(argv[2]);
+	sample_period = atoi(argv[3]);
+	if(argc == 5) {
+		num_samples = atoi(argv[4]);
+	}
+	if (configure_tty(dev))
+		exit(1);
+	if (powermon_init())
+		exit(1);
+	if (powermon_set_mask(sensor_mask))
+		exit(1);
+	if (powermon_set_samples(sample_period, num_samples))
+		exit(1);
+	if (powermon_set_time(1))
+		exit(1);
+	powermon_get_samples();
+	atexit(cleanup);
+	return 0;
+
+}

application/application.c

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+Screaming Circuits SMD component position file.
+
+Centroid Data for pc board: "drivebay pm.brd" as of: 8/4/2011 6:23:17 PM
+Measurements are in inches. Comma delimited
+Only surface mount components included
+
+RefDes,Layer,LocationX,LocationY,Rotation
+C201,Top,0.670,3.670,90
+C202,Top,0.710,3.560,180
+C203,Top,1.020,3.320,180
+C204,Top,0.880,3.320,0
+C205,Top,1.340,3.470,90
+C206,Top,1.260,3.470,90
+J101,Top,0.190,2.840,270
+J102,Bottom,0.190,2.840,90
+J103,Top,0.190,1.960,270
+J104,Bottom,0.190,1.960,90
+J105,Top,0.190,0.780,270
+J106,Bottom,0.190,0.780,90
+J201,Top,0.160,3.560,0
+L201,Top,0.750,3.670,270
+R201,Top,1.940,3.570,0
+R202,Top,1.940,3.640,0
+R301,Top,1.300,2.250,0
+R303,Top,2.070,2.570,180
+R304,Top,2.070,2.520,0
+R305,Top,2.070,2.420,180
+R306,Top,2.070,2.470,0
+R307,Bottom,1.300,2.000,0
+R309,Bottom,2.070,2.170,0
+R310,Bottom,2.070,2.220,180
+R311,Bottom,2.070,2.330,0
+R312,Bottom,2.070,2.280,180
+R313,Top,1.300,1.750,0
+R315,Top,2.070,2.080,180
+R316,Top,2.070,2.030,0
+R317,Top,2.070,1.920,180
+R318,Top,2.070,1.970,0
+R319,Top,1.300,1.250,0
+R321,Top,2.070,1.580,180
+R322,Top,2.070,1.530,0
+R323,Top,2.070,1.430,180
+R324,Top,2.070,1.480,0
+R401,Bottom,1.300,1.000,0
+R403,Bottom,2.070,1.170,0
+R404,Bottom,2.070,1.220,180
+R405,Bottom,2.070,1.330,0
+R406,Bottom,2.070,1.280,180
+R407,Top,1.300,0.750,0
+R409,Top,2.070,1.090,180
+R410,Top,2.070,1.040,0
+R411,Top,2.070,0.930,180
+R412,Top,2.070,0.980,0
+R413,Bottom,1.300,0.500,0
+R415,Bottom,2.070,0.670,0
+R416,Bottom,2.070,0.720,180
+R417,Bottom,2.070,0.830,0
+R418,Bottom,2.070,0.780,180
+R419,Top,1.300,0.250,0
+R421,Top,2.070,0.590,180
+R422,Top,2.070,0.540,0
+R423,Top,2.070,0.430,180
+R424,Top,2.070,0.480,0
+U201,Top,1.010,3.560,180
+U202,Top,1.620,3.400,0
+U301,Top,1.330,2.500,0
+U302,Bottom,1.270,2.250,0
+U303,Top,1.330,2.000,0
+U304,Top,1.330,1.500,0
+U401,Bottom,1.270,1.250,0
+U402,Top,1.330,1.000,0
+U403,Bottom,1.270,0.750,0
+U404,Top,1.330,0.500,0
+X201,Top,1.300,3.200,270