stm32f3: Add support for OPAMP

lib/stm32/f3/Makefile

@@ -46,6 +46,7 @@ OBJS += flash.o flash_common_all.o flash_common_f.o
 OBJS += gpio_common_all.o gpio_common_f0234.o
 OBJS += i2c_common_v2.o
 OBJS += iwdg_common_all.o
+OBJS += opamp.o
 OBJS += pwr_common_v1.o
 OBJS += rcc.o rcc_common_all.o
 OBJS += spi_common_all.o spi_common_v2.o

lib/stm32/f3/opamp.c

@@ -0,0 +1,156 @@
+/** @defgroup opamp_file OPAMP
+ *
+ * @ingroup STM32F3xx
+ *
+ * @brief <b>libopencm3 STM32F3xx OPAMP</b>
+ *
+ * @version 1.0.0
+ *
+ * @date 22 May 2020
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/**@{*/
+
+#include <libopencm3/stm32/opamp.h>
+
+void opamp_enable(uint32_t base)
+{
+	OPAMP_CSR(base) |= OPAMP_CSR_EN;
+}
+
+void opamp_disable(uint32_t base)
+{
+	OPAMP_CSR(base) &= ~OPAMP_CSR_EN;
+}
+
+void opamp_lock(uint32_t base)
+{
+	OPAMP_CSR(base) |= OPAMP_CSR_LOCK;
+}
+
+
+void opamp_set_calsel(uint32_t base, uint32_t calsel)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_CALSEL_MASK << OPAMP_CSR_CALSEL_SHIFT);
+	OPAMP_CSR(base) |= calsel << OPAMP_CSR_CALSEL_SHIFT;
+}
+
+bool opamp_read_outcal(uint32_t base)
+{
+	return (OPAMP_CSR(base) >> OPAMP_CSR_OUTCAL_SHIFT)
+		& OPAMP_CSR_OUTCAL_MASK;
+}
+
+void opamp_tcm_enable(uint32_t base)
+{
+	OPAMP_CSR(base) |= OPAMP_CSR_TCM_EN;
+}
+
+void opamp_tcm_disable(uint32_t base)
+{
+	OPAMP_CSR(base) &= ~OPAMP_CSR_TCM_EN;
+}
+
+void opamp_force_vp_enable(uint32_t base)
+{
+	OPAMP_CSR(base) |= OPAMP_CSR_FORCE_VP;
+}
+
+void opamp_force_vp_disable(uint32_t base)
+{
+	OPAMP_CSR(base) &= ~OPAMP_CSR_FORCE_VP;
+}
+
+void opamp_cal_enable(uint32_t base)
+{
+	OPAMP_CSR(base) |= OPAMP_CSR_CALON;
+}
+
+void opamp_cal_disable(uint32_t base)
+{
+	OPAMP_CSR(base) &= ~OPAMP_CSR_CALON;
+}
+
+
+void opamp_trimoffsetn_set(uint32_t base, uint32_t trim)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_TRIMOFFSETN_MASK
+		<< OPAMP_CSR_TRIMOFFSETN_SHIFT);
+	OPAMP_CSR(base) |= trim << OPAMP_CSR_TRIMOFFSETN_SHIFT;
+}
+
+void opamp_trimoffsetp_set(uint32_t base, uint32_t trim)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_TRIMOFFSETP_MASK
+		<< OPAMP_CSR_TRIMOFFSETP_SHIFT);
+	OPAMP_CSR(base) |= trim << OPAMP_CSR_TRIMOFFSETP_SHIFT;
+}
+
+void opamp_user_trim_enable(uint32_t base)
+{
+	OPAMP_CSR(base) |= OPAMP_CSR_USER_TRIM;
+}
+
+void opamp_user_trim_disable(uint32_t base)
+{
+	OPAMP_CSR(base) &= ~OPAMP_CSR_USER_TRIM;
+}
+
+
+void opamp_pga_gain_select(uint32_t base, uint32_t gain)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_PGA_GAIN_MASK
+		<< OPAMP_CSR_PGA_GAIN_SHIFT);
+	OPAMP_CSR(base) |= gain << OPAMP_CSR_PGA_GAIN_SHIFT;
+}
+
+
+void opamp_vp_select(uint32_t base, uint32_t vp)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_VP_SEL_MASK
+		<< OPAMP_CSR_VP_SEL_SHIFT);
+	OPAMP_CSR(base) |= vp << OPAMP_CSR_VP_SEL_SHIFT;
+}
+
+void opamp_vm_select(uint32_t base, uint32_t vm)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_VM_SEL_MASK
+		<< OPAMP_CSR_VM_SEL_SHIFT);
+	OPAMP_CSR(base) |= vm << OPAMP_CSR_VM_SEL_SHIFT;
+}
+
+
+void opamp_vps_select(uint32_t base, uint32_t vps)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_VPS_SEL_MASK
+		<< OPAMP_CSR_VPS_SEL_SHIFT);
+	OPAMP_CSR(base) |= vps << OPAMP_CSR_VPS_SEL_SHIFT;
+}
+
+void opamp_vms_select(uint32_t base, uint32_t vms)
+{
+	OPAMP_CSR(base) &= ~(OPAMP_CSR_VMS_SEL_MASK
+		<< OPAMP_CSR_VMS_SEL_SHIFT);
+	OPAMP_CSR(base) |= vms << OPAMP_CSR_VMS_SEL_SHIFT;
+}
+
+/**@}*/
+