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Merge pull request greatscottgadgets#1255 from miek/h1r9-fw
Add firmware support for h1r9
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/* | ||
* Copyright 2022 Great Scott Gadgets | ||
* | ||
* This file is part of HackRF. | ||
* | ||
* 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, 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; see the file COPYING. If not, write to | ||
* the Free Software Foundation, Inc., 51 Franklin Street, | ||
* Boston, MA 02110-1301, USA. | ||
*/ | ||
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#include "gpdma.h" | ||
#include <libopencm3/lpc43xx/timer.h> | ||
#include <libopencm3/lpc43xx/scu.h> | ||
#include <libopencm3/lpc43xx/gima.h> | ||
#include <libopencm3/lpc43xx/creg.h> | ||
#include <stdint.h> | ||
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#define CLOCK_CYCLES_1_MS (204000) | ||
#define MEASUREMENT_WINDOW_MS (50) | ||
#define MEASUREMENT_CYCLES (CLOCK_CYCLES_1_MS * MEASUREMENT_WINDOW_MS) | ||
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/* DMA linked list item */ | ||
typedef struct { | ||
uint32_t src; | ||
uint32_t dest; | ||
uint32_t next_lli; | ||
uint32_t control; | ||
} dma_lli; | ||
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/* timer control register configuration sequence */ | ||
typedef struct { | ||
uint32_t first_tcr; | ||
uint32_t second_tcr; | ||
} tcr_sequence; | ||
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dma_lli timer_dma_lli; | ||
tcr_sequence reset; | ||
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void clkin_detect_init(void) | ||
{ | ||
/* Timer1 triggers periodic measurement */ | ||
timer_set_prescaler(TIMER1, 0); | ||
timer_set_mode(TIMER1, TIMER_CTCR_MODE_TIMER); | ||
TIMER1_MCR = TIMER_MCR_MR0R; | ||
TIMER1_EMR = (TIMER_EMR_EMC_SET << TIMER_EMR_EMC0_SHIFT) | | ||
(TIMER_EMR_EMC_TOGGLE << TIMER_EMR_EMC3_SHIFT); | ||
TIMER1_MR3 = MEASUREMENT_CYCLES; | ||
TIMER1_MR0 = MEASUREMENT_CYCLES; | ||
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/* prevent TIMER1_MR3 from interfering with SCT */ | ||
CREG_CREG6 |= CREG_CREG6_CTOUTCTRL; | ||
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/* Timer2 counts CLKIN */ | ||
timer_set_prescaler(TIMER2, 0); | ||
TIMER2_CCR = TIMER_CCR_CAP3RE; | ||
GIMA_CAP2_3_IN = 0x20; // T1_MAT3 | ||
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/* measure CLKIN_DETECT signal on P4_8, pin 15, CTIN_5 */ | ||
TIMER2_CTCR = TIMER_CTCR_MODE_COUNTER_RISING | TIMER_CTCR_CINSEL_CAPN_2; | ||
scu_pinmux(P4_8, SCU_GPIO_PDN | SCU_CONF_FUNCTION1); // CTIN_5 | ||
GIMA_CAP2_2_IN = 0x00; // CTIN_5 | ||
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reset.first_tcr = TIMER_TCR_CEN | TIMER_TCR_CRST; | ||
reset.second_tcr = TIMER_TCR_CEN; | ||
timer_dma_lli.src = (uint32_t) & (reset); | ||
timer_dma_lli.dest = (uint32_t) & (TIMER2_TCR); | ||
timer_dma_lli.next_lli = (uint32_t) & (timer_dma_lli); | ||
timer_dma_lli.control = GPDMA_CCONTROL_TRANSFERSIZE(2) | | ||
GPDMA_CCONTROL_SBSIZE(0) // 1 | ||
| GPDMA_CCONTROL_DBSIZE(0) // 1 | ||
| GPDMA_CCONTROL_SWIDTH(2) // 32-bit word | ||
| GPDMA_CCONTROL_DWIDTH(2) // 32-bit word | ||
| GPDMA_CCONTROL_S(0) // AHB Master 0 | ||
| GPDMA_CCONTROL_D(1) // AHB Master 1 | ||
| GPDMA_CCONTROL_SI(1) // increment source | ||
| GPDMA_CCONTROL_DI(0) // do not increment destination | ||
| GPDMA_CCONTROL_PROT1(0) // user mode | ||
| GPDMA_CCONTROL_PROT2(0) // not bufferable | ||
| GPDMA_CCONTROL_PROT3(0) // not cacheable | ||
| GPDMA_CCONTROL_I(0); // interrupt disabled | ||
gpdma_controller_enable(); | ||
GPDMA_C0SRCADDR = timer_dma_lli.src; | ||
GPDMA_C0DESTADDR = timer_dma_lli.dest; | ||
GPDMA_C0LLI = timer_dma_lli.next_lli; | ||
GPDMA_C0CONTROL = timer_dma_lli.control; | ||
GPDMA_C0CONFIG = GPDMA_CCONFIG_DESTPERIPHERAL(0x3) // T1_MAT0 | ||
| GPDMA_CCONFIG_FLOWCNTRL(1) // memory-to-peripheral | ||
| GPDMA_CCONFIG_H(0); // do not halt | ||
gpdma_channel_enable(0); | ||
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/* start counting */ | ||
timer_reset(TIMER2); | ||
timer_reset(TIMER1); | ||
timer_enable_counter(TIMER2); | ||
timer_enable_counter(TIMER1); | ||
} | ||
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uint32_t clkin_frequency(void) | ||
{ | ||
return TIMER2_CR3 * (1000 / MEASUREMENT_WINDOW_MS); | ||
}; |
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/* | ||
* Copyright 2022 Great Scott Gadgets | ||
* | ||
* This file is part of HackRF. | ||
* | ||
* 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, 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; see the file COPYING. If not, write to | ||
* the Free Software Foundation, Inc., 51 Franklin Street, | ||
* Boston, MA 02110-1301, USA. | ||
*/ | ||
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#ifndef __CLKIN_H__ | ||
#define __CLKIN_H__ | ||
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#include <stdint.h> | ||
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void clkin_detect_init(void); | ||
uint32_t clkin_frequency(void); | ||
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#endif //__CLKIN_H__ |
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