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periph_conf.h
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1/*
2 * SPDX-FileCopyrightText: 2017 Baptiste Clenet <bapclenet@gmail.com>
3 * SPDX-License-Identifier: LGPL-2.1-only
4 */
5
6#pragma once
7
17
18#include "periph_cpu.h"
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
27#define CLOCK_CORECLOCK (48000000U)
28
33static const tc32_conf_t timer_config[] = {
34 { /* Timer 0 - System Clock */
35 .dev = TC0,
36 .irq = TC0_IRQn,
37 .mclk = &MCLK->APBCMASK.reg,
38 .mclk_mask = MCLK_APBCMASK_TC0_Msk | MCLK_APBCMASK_TC1_Msk,
39 .gclk_id = TC0_GCLK_ID,
40 .gclk_src = SAM0_GCLK_TIMER,
41 .flags = TC_CTRLA_MODE_COUNT32,
42 }
43};
44
45/* Timer 0 configuration */
46#define TIMER_0_CHANNELS 2
47#define TIMER_0_ISR isr_tc0
48#define TIMER_NUMOF ARRAY_SIZE(timer_config)
50
55static const uart_conf_t uart_config[] = {
56 { /* Virtual COM Port */
57 .dev = &SERCOM0->USART,
58 .rx_pin = GPIO_PIN(PA,5),
59 .tx_pin = GPIO_PIN(PA,4),
60#ifdef MODULE_PERIPH_UART_HW_FC
61 .rts_pin = GPIO_UNDEF,
62 .cts_pin = GPIO_UNDEF,
63#endif
64 .mux = GPIO_MUX_D,
65 .rx_pad = UART_PAD_RX_1,
66 .tx_pad = UART_PAD_TX_0,
67 .flags = UART_FLAG_NONE,
68 .gclk_src = SAM0_GCLK_MAIN,
69 }
70};
71
72/* interrupt function name mapping */
73#define UART_0_ISR isr_sercom0
74
75#define UART_NUMOF ARRAY_SIZE(uart_config)
77
82static const spi_conf_t spi_config[] = {
83 { /* Internal AT86RF212B */
84 .dev = &(SERCOM4->SPI),
85 .miso_pin = GPIO_PIN(PC, 19),
86 .mosi_pin = GPIO_PIN(PB, 30),
87 .clk_pin = GPIO_PIN(PC, 18),
88 .miso_mux = GPIO_MUX_F,
89 .mosi_mux = GPIO_MUX_F,
90 .clk_mux = GPIO_MUX_F,
91 .miso_pad = SPI_PAD_MISO_0,
92 .mosi_pad = SPI_PAD_MOSI_2_SCK_3,
93 .gclk_src = SAM0_GCLK_MAIN,
94#ifdef MODULE_PERIPH_DMA
95 .tx_trigger = SERCOM4_DMAC_ID_TX,
96 .rx_trigger = SERCOM4_DMAC_ID_RX,
97#endif
98 },
99 { /* EXT1 & EXT3 Pin Header */
100 .dev = &(SERCOM5->SPI),
101 .miso_pin = GPIO_PIN(PB, 2),
102 .mosi_pin = GPIO_PIN(PB, 22),
103 .clk_pin = GPIO_PIN(PB, 23),
104 .miso_mux = GPIO_MUX_D,
105 .mosi_mux = GPIO_MUX_D,
106 .clk_mux = GPIO_MUX_D,
107 .miso_pad = SPI_PAD_MISO_0,
108 .mosi_pad = SPI_PAD_MOSI_2_SCK_3,
109 .gclk_src = SAM0_GCLK_MAIN,
110#ifdef MODULE_PERIPH_DMA
111 /* The SAML21 doesn't support DMA triggers on SERCOM5 */
112 .tx_trigger = DMA_TRIGGER_DISABLED,
113 .rx_trigger = DMA_TRIGGER_DISABLED,
114#endif
115 }
116};
117
118#define SPI_NUMOF ARRAY_SIZE(spi_config)
120
125static const i2c_conf_t i2c_config[] = {
126 { /* EXT1 & EXT3 Pin Header */
127 .dev = &(SERCOM1->I2CM),
128 .speed = I2C_SPEED_NORMAL,
129 .scl_pin = GPIO_PIN(PA, 17),
130 .sda_pin = GPIO_PIN(PA, 16),
131 .mux = GPIO_MUX_C,
132 .gclk_src = SAM0_GCLK_MAIN,
133 .flags = I2C_FLAG_NONE
134 }
135};
136#define I2C_NUMOF ARRAY_SIZE(i2c_config)
138
143#define EXTERNAL_OSC32_SOURCE 1
144#define INTERNAL_OSC32_SOURCE 0
145#define ULTRA_LOW_POWER_INTERNAL_OSC_SOURCE 0
147
152#ifndef RTT_FREQUENCY
153#define RTT_FREQUENCY (32768U)
154#endif
156
161
162/* ADC Default values */
163#define ADC_PRESCALER ADC_CTRLB_PRESCALER_DIV256
164
165#define ADC_NEG_INPUT ADC_INPUTCTRL_MUXNEG(0x18u)
166#define ADC_REF_DEFAULT ADC_REFCTRL_REFSEL_INTVCC2
167
168static const adc_conf_chan_t adc_channels[] = {
169 /* port, pin, muxpos */
170 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA06 }, /* EXT1, pin 3 */
171 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA07 }, /* EXT1, pin 4 */
172 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA10 },
173 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA11 },
174 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA02 }
175};
176
177#define ADC_NUMOF ARRAY_SIZE(adc_channels)
179
184static const sam0_common_usb_config_t sam_usbdev_config[] = {
185 {
186 .dm = GPIO_PIN(PA, 24),
187 .dp = GPIO_PIN(PA, 25),
188 .d_mux = GPIO_MUX_G,
189 .device = &USB->DEVICE,
190 .gclk_src = SAM0_GCLK_48MHZ,
191 }
192};
194
195#ifdef __cplusplus
196}
197#endif
198
#define GPIO_PIN(x, y)
Define a CPU specific GPIO pin generator macro.
Definition periph_cpu.h:45
#define GPIO_UNDEF
Definition of a fitting UNDEF value.
@ I2C_SPEED_NORMAL
normal mode: ~100 kbit/s
Definition periph_cpu.h:277
@ UART_PAD_RX_1
select pad 1
@ I2C_FLAG_NONE
No flags set.
@ SPI_PAD_MISO_0
use pad 0 for MISO line
#define DMA_TRIGGER_DISABLED
Indicates that the peripheral doesn't utilize the DMA controller.
@ UART_FLAG_NONE
No flags set.
@ PB
port B
@ PC
port C
@ PA
port A
@ UART_PAD_TX_0
select pad 0
@ GPIO_MUX_D
select peripheral function D
@ GPIO_MUX_G
select peripheral function G
@ GPIO_MUX_C
select peripheral function C
@ GPIO_MUX_F
select peripheral function F
@ SPI_PAD_MOSI_2_SCK_3
use pad 2 for MOSI, pad 3 for SCK
#define ADC_INPUTCTRL_MUXPOS_PA10
Alias for PIN18.
Definition periph_cpu.h:136
#define ADC_INPUTCTRL_MUXPOS_PA11
Alias for PIN19.
Definition periph_cpu.h:137
#define ADC_INPUTCTRL_MUXPOS_PA07
Alias for PIN7.
Definition periph_cpu.h:125
#define ADC_INPUTCTRL_MUXPOS_PA06
Alias for PIN6.
Definition periph_cpu.h:124
#define ADC_INPUTCTRL_MUXPOS_PA02
ADC pin aliases.
Definition periph_cpu.h:118
#define SAM0_GCLK_MAIN
120 MHz main clock
Definition periph_cpu.h:73
#define SAM0_GCLK_TIMER
4-8 MHz clock for xTimer
Definition periph_cpu.h:78
ADC Channel Configuration.
I2C configuration structure.
Definition periph_cpu.h:298
USB peripheral parameters.
SPI device configuration.
Definition periph_cpu.h:336
Timer device configuration.
UART device configuration.
Definition periph_cpu.h:217