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/* OpenPICC Main Program 

 * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>

 *

 *  This program 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 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program 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, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 */

#include <errno.h>

#include <include/lib_AT91SAM7.h>

#include <include/openpcd.h>

#include <os/dbgu.h>

#include <os/led.h>

#include <os/pcd_enumerate.h>

#include <os/usb_handler.h>

#include "../openpcd.h"

#include <os/main.h>

#include <os/pwm.h>

#include <os/tc_cdiv.h>

#include <os/pio_irq.h>

#include <picc/da.h>

#include <picc/pll.h>

#include <picc/ssc_picc.h>

#include <picc/load_modulation.h>

static const uint16_t cdivs[] = { 8192, 2048, 1024, 512, 128, 64, 32, 16 };

static uint8_t cdiv_idx = 6;

static uint16_t duty_percent = 22;

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

static uint32_t pwm_freq[] = { 105937, 211875, 423750, 847500 };

static uint8_t pwm_freq_idx = 0;

static uint8_t load_mod = 0;

#define DA_BASELINE 192

void _init_func(void)

{

	/* low-level hardware initialization */

	pio_irq_init();

	pll_init();

	da_init();

	load_mod_init();

	tc_cdiv_init();

	//tc_fdt_init();

	pwm_init();

	adc_init();

	ssc_rx_init();

	ssc_tx_init();

	/* high-level protocol */

	decoder_init();

	opicc_usbapi_init();

	AT91F_PIO_CfgInput(AT91C_BASE_PIOA, OPENPICC_PIO_BOOTLDR);

	da_comp_carr(DA_BASELINE);

}

static void help(void)

{

	DEBUGPCR("q: da decrease       w: da increase\r\n"

		 "e: da retransmit     P: PLL inhibit toggle");

	DEBUGPCR("o: decrease duty       p: increase duty\r\n"

		 "k: stop pwm            l: start pwn\r\n"

		 "n: decrease freq       m: incresae freq");

	DEBUGPCR("u: PA23 const 1        y: PA23 const 0\r\n"

		 "t: PA23 PWM0           L: display PLL LOCK\r\n"

		 "{: decrease cdiv_idx   }: increse cdiv idx\r\n"

		 "<: decrease cdiv_phase >: increase cdiv_phase");

	DEBUGPCR("v: decrease load_mod   b: increase load_mod\r\n"

		 "B: read button         S: toggle nSLAVE_RESET\r\n"

		 "a: SSC stop            s: SSC start\r\n"

		 "d: SSC mode select     T: TC_CDIV_HELP enable\r\n");

}

int _main_dbgu(char key)

{

	static uint8_t poti = DA_BASELINE;

	static uint8_t pll_inh = 1;

	static uint8_t ssc_mode = 1;

	static uint8_t sync_enabled = 0;

	DEBUGPCRF("main_dbgu");

	switch (key) {

	case 'q':

		if (poti > 0)

			poti--;

		da_comp_carr(poti);

		DEBUGPCRF("DA: %u", poti);

		break;

	case 'w':

		if (poti < 255)

			poti++;

		da_comp_carr(poti);

		DEBUGPCRF("DA: %u", poti);

		break;

	case 'e':

		da_comp_carr(poti);

		DEBUGPCRF("DA: %u", poti);

		break;

	case 'P':

		pll_inh++;

		pll_inh &= 0x01;

		pll_inhibit(pll_inh);

		DEBUGPCRF("PLL Inhibit: %u", pll_inh);

		break;

	case 'L':

		DEBUGPCRF("PLL Lock: %u", pll_is_locked());

		break;

	case 'o':

		if (duty_percent >= 1)

			duty_percent--;

		pwm_duty_set_percent(0, duty_percent);

		break;

	case 'p':

		if (duty_percent <= 99)

			duty_percent++;

		pwm_duty_set_percent(0, duty_percent);

		break;

	case 'k':

		pwm_stop(0);

		break;

	case 'l':

		pwm_start(0);

		break;

	case 'n':

		if (pwm_freq_idx > 0) {

			pwm_freq_idx--;

			pwm_stop(0);

			pwm_freq_set(0, pwm_freq[pwm_freq_idx]);

			pwm_start(0);

			pwm_duty_set_percent(0, 22);	/* 22% of 9.43uS = 2.07uS */

		}

		break;

	case 'm':

		if (pwm_freq_idx < ARRAY_SIZE(pwm_freq)-1) {

			pwm_freq_idx++;

			pwm_stop(0);

			pwm_freq_set(0, pwm_freq[pwm_freq_idx]);

			pwm_start(0);

			pwm_duty_set_percent(0, 22);	/* 22% of 9.43uS = 2.07uS */

		}

		break;

	case 'u':

		DEBUGPCRF("PA23 output high");

		AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, AT91C_PIO_PA23);

		AT91F_PIO_SetOutput(AT91C_BASE_PIOA, AT91C_PIO_PA23);

		break;

	case 'y':

		DEBUGPCRF("PA23 output low");

		AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, AT91C_PIO_PA23);

		AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, AT91C_PIO_PA23);

		break;

	case 't':

		DEBUGPCRF("PA23 PeriphA (PWM)");

		AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA, 0, AT91C_PA23_PWM0);

		break;

	case '?':

		help();

		break;

	case '<':

		tc_cdiv_phase_inc();

		break;

	case '>':

		tc_cdiv_phase_dec();

		break;

	case '{':

		if (cdiv_idx > 0)

			cdiv_idx--;

		tc_cdiv_set_divider(cdivs[cdiv_idx]);

		break;

	case '}':

		if (cdiv_idx < ARRAY_SIZE(cdivs)-1)

			cdiv_idx++;

		tc_cdiv_set_divider(cdivs[cdiv_idx]);

		break;

	case 'v':

		if (load_mod > 0)

			load_mod--;

		load_mod_level(load_mod);

		DEBUGPCR("load_mod: %u\n", load_mod);

		break;

	case 'b':

		if (load_mod < 3)

			load_mod++;

		load_mod_level(load_mod);

		DEBUGPCR("load_mod: %u\n", load_mod);

		break;

	case 'B':

		DEBUGPCRF("Button status: %u\n", 

			  AT91F_PIO_IsInputSet(AT91C_BASE_PIOA, AT91F_PIO_IsInputSet));

		break;

	case 'S':

		if (AT91F_PIO_IsOutputSet(AT91C_BASE_PIOA, OPENPICC_PIO_nSLAVE_RESET)) {

			AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_nSLAVE_RESET);

			DEBUGPCRF("nSLAVE_RESET == LOW");

		} else {

			AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_nSLAVE_RESET);

			DEBUGPCRF("nSLAVE_RESET == HIGH");

		}

		break;

	case 'a':

		DEBUGPCRF("SSC RX STOP");

		ssc_rx_stop();

		break;

	case 's':

		DEBUGPCRF("SSC RX START");

		ssc_rx_start();

		break;

	case 'd':

		ssc_mode++;

		if (ssc_mode >= 6)

			ssc_mode = 0;

		ssc_rx_mode_set(ssc_mode);

		DEBUGPCRF("SSC MODE %u", ssc_mode);

		break;

	case 'T':

		if (sync_enabled) {

			tc_cdiv_sync_disable();

			sync_enabled = 0;

		} else  {

			tc_cdiv_sync_enable();

			sync_enabled = 1;

		}

		break;

	}

	tc_cdiv_print();

	//tc_fdt_print();

	ssc_print();

	return -EINVAL;

}

void _main_func(void)

{

	/* first we try to get rid of pending to-be-sent stuff */

	usb_out_process();

	/* next we deal with incoming requests from USB EP1 (OUT) */

	usb_in_process();

	udp_unthrottle();

	ssc_rx_unthrottle();

}