sovereign-rf/hackrf
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Universalize: operacake_sctimer.c

Browse source 
Co-authored-by: Antoine van Gelder <antoine@greatscottgadgets.com>
This commit is contained in:
Martin Ling 2026-04-04 00:54:12 +01:00
parent 23011713b4
commit 70162eef43
1 changed files with 24 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

40
firmware/common/operacake_sctimer.c
View file

@ -30,6 +30,8 @@
#include <libopencm3/lpc43xx/sgpio.h>
#endif
#include <platform_detect.h>
#include "delay.h"
#include "sct.h"
@ -95,25 +97,31 @@ void operacake_sctimer_init(void)
P7_0,
SCU_CONF_EPUN_DIS_PULLUP | SCU_CONF_EHS_FAST | SCU_CONF_FUNCTION1);
#ifndef PRALINE
// Configure the SGPIO to output the clock (f=2 * sample clock) on pin 12
SGPIO_OUT_MUX_CFG12 = SGPIO_OUT_MUX_CFG_P_OUT_CFG(0x08) | // clkout output mode
SGPIO_OUT_MUX_CFG_P_OE_CFG(0); // gpio_oe
SGPIO_GPIO_OENREG |= BIT12;
uint8_t sct_clock_input;
if (detected_platform() != BOARD_ID_PRALINE) {
#if !defined(PRALINE) || defined(UNIVERSAL)
// Configure the SGPIO to output the clock (f=2 * sample clock) on pin 12
SGPIO_OUT_MUX_CFG12 =
SGPIO_OUT_MUX_CFG_P_OUT_CFG(0x08) | // clkout output mode
SGPIO_OUT_MUX_CFG_P_OE_CFG(0); // gpio_oe
SGPIO_GPIO_OENREG |= BIT12;
// Use the GIMA to connect the SGPIO clock to the SCTimer
GIMA_CTIN_1_IN = 0x2 << 4; // Route SGPIO12 to SCTIN1
// Use the GIMA to connect the SGPIO clock to the SCTimer
GIMA_CTIN_1_IN = 0x2 << 4; // Route SGPIO12 to SCTIN1
uint8_t sct_clock_input = SCT_CONFIG_CKSEL_RISING_EDGES_ON_INPUT_1;
#else
// Configure pin P6_4 as SCT_IN_6
scu_pinmux(P6_4, SCU_CLK_IN | SCU_CONF_FUNCTION1);
// Use the GIMA to connect MS0/CLK1 (SCT_CLK) on pin P6_4 to the SCTimer
GIMA_CTIN_6_IN = 0x0 << 4;
uint8_t sct_clock_input = SCT_CONFIG_CKSEL_RISING_EDGES_ON_INPUT_6;
sct_clock_input = SCT_CONFIG_CKSEL_RISING_EDGES_ON_INPUT_1;
#endif
} else {
#if defined(PRALINE) || defined(UNIVERSAL)
// Configure pin P6_4 as SCT_IN_6
scu_pinmux(P6_4, SCU_CLK_IN | SCU_CONF_FUNCTION1);
// Use the GIMA to connect MS0/CLK1 (SCT_CLK) on pin P6_4 to the SCTimer
GIMA_CTIN_6_IN = 0x0 << 4;
sct_clock_input = SCT_CONFIG_CKSEL_RISING_EDGES_ON_INPUT_6;
#endif
}
// We configure this register first, because the user manual says to
SCT_CONFIG |= SCT_CONFIG_UNIFY_32_BIT | SCT_CONFIG_CLKMODE_PRESCALED_BUS_CLOCK |