added prescaler for 16 bit pwm in LPC1347 target
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Diff: targets/hal/TARGET_RENESAS/TARGET_VK_RZ_A1H/port_api.c
- Revision:
- 119:3921aeca8633
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_RENESAS/TARGET_VK_RZ_A1H/port_api.c Fri Apr 29 01:15:11 2016 +0100 @@ -0,0 +1,74 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "port_api.h" +#include "pinmap.h" +#include "gpio_api.h" +#include "gpio_addrdefine.h" + +PinName port_pin(PortName port, int pin_n) { + return (PinName)((port*0x10)+pin_n); +} + +void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { + obj->port = port; + obj->mask = mask; + + obj->reg_dir = (volatile uint32_t *)PMSR(port); + obj->reg_out = (volatile uint32_t *)PORT(port); + obj->reg_in = (volatile uint32_t *)PPR(port); + obj->reg_buf = (volatile uint32_t *)PIBC(port); + // Do not use masking, because it prevents the use of the unmasked pins + // port_reg->FIOMASK = ~mask; + + uint32_t i; + // The function is set per pin: reuse gpio logic + for (i=0; i<32; i++) { + if (obj->mask & (1<<i)) { + gpio_set(port_pin(obj->port, i)); + } + } + + port_dir(obj, dir); +} + +void port_mode(port_t *obj, PinMode mode) { + uint32_t i; + // The mode is set per pin: reuse pinmap logic + for (i=0; i<32; i++) { + if (obj->mask & (1<<i)) { + pin_mode(port_pin(obj->port, i), mode); + } + } +} + +void port_dir(port_t *obj, PinDirection dir) { + switch (dir) { + case PIN_INPUT : *obj->reg_dir = (obj->mask << 16) | obj->mask; + *obj->reg_buf |= obj->mask; + break; + case PIN_OUTPUT: *obj->reg_dir = (obj->mask << 16) | ~obj->mask; + *obj->reg_buf &= ~obj->mask; + break; + } +} + +void port_write(port_t *obj, int value) { + *obj->reg_out = (obj->mask << 16) | (value & obj->mask); +} + +int port_read(port_t *obj) { + return (*obj->reg_in & obj->mask); +}