modified mbed-src to overclock K64F MCU to run at 128.125MHz, for running the UART at 8Mbps, call SystemCoreClockUpdate() at the beginning of your code to re-calculate the SystemCoreClock
Fork of mbed-src by
targets/hal/TARGET_Freescale/TARGET_KLXX/port_api.c@246:15713155d815, 2014-07-01 (annotated)
- Committer:
- piyamate
- Date:
- Tue Jul 01 00:03:52 2014 +0000
- Revision:
- 246:15713155d815
- Parent:
- 82:0b31dbcd4769
Overclock K64F to 128.125MHz
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 31:42176bc3c368 | 1 | /* mbed Microcontroller Library |
mbed_official | 31:42176bc3c368 | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 31:42176bc3c368 | 3 | * |
mbed_official | 31:42176bc3c368 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 31:42176bc3c368 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 31:42176bc3c368 | 6 | * You may obtain a copy of the License at |
mbed_official | 31:42176bc3c368 | 7 | * |
mbed_official | 31:42176bc3c368 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 31:42176bc3c368 | 9 | * |
mbed_official | 31:42176bc3c368 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 31:42176bc3c368 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 31:42176bc3c368 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 31:42176bc3c368 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 31:42176bc3c368 | 14 | * limitations under the License. |
mbed_official | 31:42176bc3c368 | 15 | */ |
mbed_official | 31:42176bc3c368 | 16 | #include "port_api.h" |
mbed_official | 31:42176bc3c368 | 17 | #include "pinmap.h" |
mbed_official | 31:42176bc3c368 | 18 | #include "gpio_api.h" |
mbed_official | 31:42176bc3c368 | 19 | |
mbed_official | 31:42176bc3c368 | 20 | PinName port_pin(PortName port, int pin_n) { |
mbed_official | 31:42176bc3c368 | 21 | return (PinName)((port << PORT_SHIFT) | (pin_n << 2)); |
mbed_official | 31:42176bc3c368 | 22 | } |
mbed_official | 31:42176bc3c368 | 23 | |
mbed_official | 31:42176bc3c368 | 24 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { |
mbed_official | 31:42176bc3c368 | 25 | obj->port = port; |
mbed_official | 31:42176bc3c368 | 26 | obj->mask = mask; |
mbed_official | 31:42176bc3c368 | 27 | |
mbed_official | 31:42176bc3c368 | 28 | FGPIO_Type *reg = (FGPIO_Type *)(FPTA_BASE + port * 0x40); |
mbed_official | 31:42176bc3c368 | 29 | |
mbed_official | 31:42176bc3c368 | 30 | obj->reg_out = ®->PDOR; |
mbed_official | 31:42176bc3c368 | 31 | obj->reg_in = ®->PDIR; |
mbed_official | 31:42176bc3c368 | 32 | obj->reg_dir = ®->PDDR; |
mbed_official | 31:42176bc3c368 | 33 | |
mbed_official | 31:42176bc3c368 | 34 | uint32_t i; |
mbed_official | 31:42176bc3c368 | 35 | // The function is set per pin: reuse gpio logic |
mbed_official | 31:42176bc3c368 | 36 | for (i=0; i<32; i++) { |
mbed_official | 31:42176bc3c368 | 37 | if (obj->mask & (1<<i)) { |
mbed_official | 31:42176bc3c368 | 38 | gpio_set(port_pin(obj->port, i)); |
mbed_official | 31:42176bc3c368 | 39 | } |
mbed_official | 31:42176bc3c368 | 40 | } |
mbed_official | 31:42176bc3c368 | 41 | |
mbed_official | 31:42176bc3c368 | 42 | port_dir(obj, dir); |
mbed_official | 31:42176bc3c368 | 43 | } |
mbed_official | 31:42176bc3c368 | 44 | |
mbed_official | 31:42176bc3c368 | 45 | void port_mode(port_t *obj, PinMode mode) { |
mbed_official | 31:42176bc3c368 | 46 | uint32_t i; |
mbed_official | 31:42176bc3c368 | 47 | // The mode is set per pin: reuse pinmap logic |
mbed_official | 31:42176bc3c368 | 48 | for (i=0; i<32; i++) { |
mbed_official | 31:42176bc3c368 | 49 | if (obj->mask & (1<<i)) { |
mbed_official | 31:42176bc3c368 | 50 | pin_mode(port_pin(obj->port, i), mode); |
mbed_official | 31:42176bc3c368 | 51 | } |
mbed_official | 31:42176bc3c368 | 52 | } |
mbed_official | 31:42176bc3c368 | 53 | } |
mbed_official | 31:42176bc3c368 | 54 | |
mbed_official | 31:42176bc3c368 | 55 | void port_dir(port_t *obj, PinDirection dir) { |
mbed_official | 31:42176bc3c368 | 56 | switch (dir) { |
mbed_official | 31:42176bc3c368 | 57 | case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break; |
mbed_official | 31:42176bc3c368 | 58 | case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; |
mbed_official | 31:42176bc3c368 | 59 | } |
mbed_official | 31:42176bc3c368 | 60 | } |
mbed_official | 31:42176bc3c368 | 61 | |
mbed_official | 31:42176bc3c368 | 62 | void port_write(port_t *obj, int value) { |
mbed_official | 31:42176bc3c368 | 63 | *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask); |
mbed_official | 31:42176bc3c368 | 64 | } |
mbed_official | 31:42176bc3c368 | 65 | |
mbed_official | 31:42176bc3c368 | 66 | int port_read(port_t *obj) { |
mbed_official | 31:42176bc3c368 | 67 | return (*obj->reg_in & obj->mask); |
mbed_official | 31:42176bc3c368 | 68 | } |