diff options
Diffstat (limited to 'tmk_core/protocol/arm_atsam/clks.h')
| -rw-r--r-- | tmk_core/protocol/arm_atsam/clks.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/tmk_core/protocol/arm_atsam/clks.h b/tmk_core/protocol/arm_atsam/clks.h new file mode 100644 index 0000000000..96819bfdd0 --- /dev/null +++ b/tmk_core/protocol/arm_atsam/clks.h @@ -0,0 +1,90 @@ +/* +Copyright 2018 Massdrop Inc. + +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, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef _CLKS_H_ +#define _CLKS_H_ + +#ifndef MD_BOOTLOADER + +//From keyboard +#include "config_led.h" +#include "config.h" + +#endif //MD_BOOTLOADER + +#define PLL_RATIO 47 //mcu frequency ((X+1)MHz) +#define FREQ_DFLL_DEFAULT 48000000 //DFLL frequency / usb clock +#define FREQ_SPI_DEFAULT 1000000 //spi to 595 shift regs +#define FREQ_I2C0_DEFAULT 100000 //i2c to hub +#define FREQ_I2C1_DEFAULT I2C_HZ //i2c to LED drivers +#define FREQ_TC45_DEFAULT 1000000 //1 usec resolution + +//I2C1 Set ~Result PWM Time (2x Drivers) +// 1000000 1090000 +// 900000 1000000 3.82ms +// 800000 860000 +// 700000 750000 +// 600000 630000 +// 580000 615000 6.08ms +// 500000 522000 + +#define FREQ_XOSC0 16000000 + +#define CHAN_SERCOM_SPI 2 //shift regs +#define CHAN_SERCOM_I2C0 0 //hub +#define CHAN_SERCOM_I2C1 1 //led drivers +#define CHAN_SERCOM_UART 3 //debug util + +//Generator clock channels +#define GEN_DPLL0 0 +#define GEN_OSC0 1 +#define GEN_TC45 2 + +#define SERCOM_COUNT 5 +#define GCLK_COUNT 12 + +typedef struct clk_s { + uint32_t freq_dfll; + uint32_t freq_dpll[2]; + uint32_t freq_sercom[SERCOM_COUNT]; + uint32_t freq_gclk[GCLK_COUNT]; + uint32_t freq_xosc0; + uint32_t freq_spi; + uint32_t freq_i2c0; + uint32_t freq_i2c1; + uint32_t freq_uart; + uint32_t freq_adc0; +} clk_t; + +extern volatile clk_t system_clks; +extern volatile uint64_t ms_clk; + +void CLK_oscctrl_init(void); +void CLK_reset_time(void); +uint32_t CLK_set_gclk_freq(uint8_t gclkn, uint32_t freq); +uint32_t CLK_enable_timebase(void); +uint32_t CLK_get_ms(void); +uint64_t CLK_get_us(void); +void CLK_delay_us(uint16_t usec); +void CLK_delay_ms(uint64_t msec); + +uint32_t CLK_set_spi_freq(uint8_t sercomn, uint32_t freq); +uint32_t CLK_set_i2c0_freq(uint8_t sercomn, uint32_t freq); +uint32_t CLK_set_i2c1_freq(uint8_t sercomn, uint32_t freq); +void CLK_init(void); + +#endif // _CLKS_H_ |