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forgot to add ea4357 files
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hathach
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352
hw/bsp/ea4357/pca9532.c
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352
hw/bsp/ea4357/pca9532.c
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/*****************************************************************************
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*
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* Copyright(C) 2011, Embedded Artists AB
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* All rights reserved.
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*
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******************************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* Embedded Artists AB assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. Embedded Artists AB
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* reserves the right to make changes in the software without
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* notification. Embedded Artists AB also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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*****************************************************************************/
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/*
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* NOTE: I2C must have been initialized before calling any functions in this
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* file.
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*/
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/******************************************************************************
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* Includes
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*****************************************************************************/
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//#include "board.h"
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#include "chip.h"
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#include "pca9532.h"
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/******************************************************************************
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* Defines and typedefs
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*****************************************************************************/
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#define I2C_PORT (LPC_I2C0)
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#define LS_MODE_ON 0x01
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#define LS_MODE_BLINK0 0x02
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#define LS_MODE_BLINK1 0x03
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/******************************************************************************
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* External global variables
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*****************************************************************************/
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/******************************************************************************
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* Local variables
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*****************************************************************************/
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static uint16_t blink0Shadow = 0;
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static uint16_t blink1Shadow = 0;
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static uint16_t ledStateShadow = 0;
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/******************************************************************************
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* Local Functions
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*****************************************************************************/
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static Status I2CWrite(uint32_t addr, uint8_t* buf, uint32_t len)
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{
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I2CM_XFER_T i2cData;
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i2cData.slaveAddr = addr;
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i2cData.options = 0;
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i2cData.status = 0;
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i2cData.txBuff = buf;
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i2cData.txSz = len;
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i2cData.rxBuff = NULL;
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i2cData.rxSz = 0;
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if (Chip_I2CM_XferBlocking(LPC_I2C0, &i2cData) == 0) {
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return ERROR;
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}
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return SUCCESS;
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}
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static Status I2CRead(uint32_t addr, uint8_t* buf, uint32_t len)
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{
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I2CM_XFER_T i2cData;
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i2cData.slaveAddr = addr;
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i2cData.options = 0;
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i2cData.status = 0;
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i2cData.txBuff = NULL;
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i2cData.txSz = 0;
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i2cData.rxBuff = buf;
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i2cData.rxSz = len;
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if (Chip_I2CM_XferBlocking(LPC_I2C0, &i2cData) == 0) {
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return ERROR;
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}
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return SUCCESS;
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}
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static void setLsStates(uint16_t states, uint8_t* ls, uint8_t mode)
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{
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#define IS_LED_SET(bit, x) ( ( ((x) & (bit)) != 0 ) ? 1 : 0 )
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int i = 0;
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for (i = 0; i < 4; i++) {
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ls[i] |= ( (IS_LED_SET(0x0001, states)*mode << 0)
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| (IS_LED_SET(0x0002, states)*mode << 2)
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| (IS_LED_SET(0x0004, states)*mode << 4)
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| (IS_LED_SET(0x0008, states)*mode << 6) );
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states >>= 4;
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}
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}
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static void setLeds(void)
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{
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uint8_t buf[5];
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uint8_t ls[4] = {0,0,0,0};
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uint16_t states = ledStateShadow;
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/* LEDs in On/Off state */
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setLsStates(states, ls, LS_MODE_ON);
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/* set the LEDs that should blink */
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setLsStates(blink0Shadow, ls, LS_MODE_BLINK0);
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setLsStates(blink1Shadow, ls, LS_MODE_BLINK1);
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buf[0] = PCA9532_LS0 | PCA9532_AUTO_INC;
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buf[1] = ls[0];
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buf[2] = ls[1];
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buf[3] = ls[2];
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buf[4] = ls[3];
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I2CWrite(PCA9532_I2C_ADDR, buf, 5);
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}
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/******************************************************************************
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* Public Functions
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*****************************************************************************/
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/******************************************************************************
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*
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* Description:
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* Initialize the PCA9532 Device
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*
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*****************************************************************************/
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void pca9532_init (void)
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{
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/* nothing to initialize */
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}
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/******************************************************************************
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*
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* Description:
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* Get the LED states
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*
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* Params:
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* [in] shadow - TRUE if the states should be retrieved from the shadow
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* variables. The shadow variable are updated when any
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* of setLeds, setBlink0Leds and/or setBlink1Leds are
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* called.
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*
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* FALSE if the state should be retrieved from the PCA9532
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* device. A blinkin LED may be reported as on or off
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* depending on the state when calling the function.
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*
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* Returns:
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* A mask where a 1 indicates that a LED is on (or blinking).
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*
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*****************************************************************************/
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uint16_t pca9532_getLedState (uint32_t shadow)
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{
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uint8_t buf[2];
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uint16_t ret = 0;
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if (shadow) {
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/* a blink LED is reported as on*/
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ret = (ledStateShadow | blink0Shadow | blink1Shadow);
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}
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else {
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/*
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* A blinking LED may be reported as on or off depending on
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* its state when reading the Input register.
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*/
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buf[0] = PCA9532_INPUT0;
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I2CWrite(PCA9532_I2C_ADDR, buf, 1);
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I2CRead(PCA9532_I2C_ADDR, buf, 1);
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ret = buf[0];
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buf[0] = PCA9532_INPUT1;
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I2CWrite(PCA9532_I2C_ADDR, buf, 1);
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I2CRead(PCA9532_I2C_ADDR, buf, 1);
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ret |= (buf[0] << 8);
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/* invert since LEDs are active low */
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ret = ((~ret) & 0xFFFF);
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}
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return (ret & ~PCA9532_NOT_USED);
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}
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/******************************************************************************
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*
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* Description:
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* Set LED states (on or off).
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*
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* Params:
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* [in] ledOnMask - The LEDs that should be turned on. This mask has
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* priority over ledOffMask
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* [in] ledOffMask - The LEDs that should be turned off.
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*
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*****************************************************************************/
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void pca9532_setLeds (uint16_t ledOnMask, uint16_t ledOffMask)
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{
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/* turn off leds */
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ledStateShadow &= (~(ledOffMask) & 0xffff);
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/* ledOnMask has priority over ledOffMask */
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ledStateShadow |= ledOnMask;
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/* turn off blinking */
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blink0Shadow &= (~(ledOffMask) & 0xffff);
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blink1Shadow &= (~(ledOffMask) & 0xffff);
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setLeds();
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}
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/******************************************************************************
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*
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* Description:
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* Set the blink period for PWM0. Valid values are 0 - 255 where 0
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* means 152 Hz and 255 means 0.59 Hz. A value of 151 means 1 Hz.
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*
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* Params:
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* [in] period - the period for pwm0
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*
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*****************************************************************************/
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void pca9532_setBlink0Period(uint8_t period)
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{
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uint8_t buf[2];
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buf[0] = PCA9532_PSC0;
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buf[1] = period;
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I2CWrite(PCA9532_I2C_ADDR, buf, 2);
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}
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/******************************************************************************
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*
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* Description:
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* Set the duty cycle for PWM0. Valid values are 0 - 100. 25 means the LED
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* is on 25% of the period.
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*
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* Params:
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* [in] duty - duty cycle
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*
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*****************************************************************************/
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void pca9532_setBlink0Duty(uint8_t duty)
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{
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uint8_t buf[2];
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uint32_t tmp = duty;
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if (tmp > 100) {
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tmp = 100;
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}
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tmp = (256 * tmp)/100;
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buf[0] = PCA9532_PWM0;
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buf[1] = tmp;
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I2CWrite(PCA9532_I2C_ADDR, buf, 2);
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}
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/******************************************************************************
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*
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* Description:
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* Set the LEDs that should blink with rate and duty cycle from PWM0.
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* Blinking is turned off with pca9532_setLeds.
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*
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* Params:
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* [in] ledMask - LEDs that should blink.
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*
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*****************************************************************************/
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void pca9532_setBlink0Leds(uint16_t ledMask)
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{
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blink0Shadow |= ledMask;
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setLeds();
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}
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/******************************************************************************
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*
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* Description:
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* Set the blink period for PWM1. Valid values are 0 - 255 where 0
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* means 152 Hz and 255 means 0.59 Hz. A value of 151 means 1 Hz.
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*
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* Params:
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* [in] period - The period for PWM1
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*
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*****************************************************************************/
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void pca9532_setBlink1Period(uint8_t period)
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{
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uint8_t buf[2];
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buf[0] = PCA9532_PSC1;
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buf[1] = period;
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I2CWrite(PCA9532_I2C_ADDR, buf, 2);
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}
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/******************************************************************************
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*
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* Description:
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* Set the duty cycle for PWM1. Valid values are 0 - 100. 25 means the LED
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* is on 25% of the period.
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*
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* Params:
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* [in] duty - duty cycle.
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*
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*****************************************************************************/
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void pca9532_setBlink1Duty(uint8_t duty)
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{
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uint8_t buf[2];
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uint32_t tmp = duty;
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if (tmp > 100) {
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tmp = 100;
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}
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tmp = (256 * tmp)/100;
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buf[0] = PCA9532_PWM1;
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buf[1] = tmp;
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I2CWrite(PCA9532_I2C_ADDR, buf, 2);
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}
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/******************************************************************************
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*
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* Description:
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* Set the LEDs that should blink with rate and duty cycle from PWM1.
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* Blinking is turned off with pca9532_setLeds.
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*
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* Params:
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* [in] ledMask - LEDs that should blink.
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*
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*****************************************************************************/
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void pca9532_setBlink1Leds(uint16_t ledMask)
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{
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blink1Shadow |= ledMask;
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setLeds();
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}
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94
hw/bsp/ea4357/pca9532.h
Normal file
94
hw/bsp/ea4357/pca9532.h
Normal file
@ -0,0 +1,94 @@
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/*****************************************************************************
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*
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* Copyright(C) 2011, Embedded Artists AB
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* All rights reserved.
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*
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******************************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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||||
* Embedded Artists AB assumes no responsibility or liability for the
|
||||
* use of the software, conveys no license or title under any patent,
|
||||
* copyright, or mask work right to the product. Embedded Artists AB
|
||||
* reserves the right to make changes in the software without
|
||||
* notification. Embedded Artists AB also make no representation or
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||||
* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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||||
*****************************************************************************/
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#ifndef __PCA9532C_H
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#define __PCA9532C_H
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#define PCA9532_I2C_ADDR (0xC0>>1)
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#define PCA9532_INPUT0 0x00
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#define PCA9532_INPUT1 0x01
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#define PCA9532_PSC0 0x02
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#define PCA9532_PWM0 0x03
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#define PCA9532_PSC1 0x04
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#define PCA9532_PWM1 0x05
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#define PCA9532_LS0 0x06
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#define PCA9532_LS1 0x07
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#define PCA9532_LS2 0x08
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#define PCA9532_LS3 0x09
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#define PCA9532_AUTO_INC 0x10
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/*
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* The Keys on the base board are mapped to LED0 -> LED3 on
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* the PCA9532.
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*/
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#define KEY1 0x0001
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#define KEY2 0x0002
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#define KEY3 0x0004
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#define KEY4 0x0008
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#define KEY_MASK 0x000F
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/*
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* MMC Card Detect and MMC Write Protect are mapped to LED4
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* and LED5 on the PCA9532. Please note that WP is active low.
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*/
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#define MMC_CD 0x0010
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#define MMC_WP 0x0020
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#define MMC_MASK 0x30
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/* NOTE: LED6 and LED7 on PCA9532 are not connected to anything */
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#define PCA9532_NOT_USED 0xC0
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/*
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* Below are the LED constants to use when enabling/disabling a LED.
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* The LED names are the names printed on the base board and not
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* the names from the PCA9532 device. base_LED1 -> LED8 on PCA9532,
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* base_LED2 -> LED9, and so on.
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*/
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#define LED1 0x0100
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#define LED2 0x0200
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#define LED3 0x0400
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#define LED4 0x0800
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#define LED5 0x1000
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#define LED6 0x2000
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#define LED7 0x4000
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#define LED8 0x8000
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#define LED_MASK 0xFF00
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void pca9532_init (void);
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uint16_t pca9532_getLedState (uint32_t shadow);
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void pca9532_setLeds (uint16_t ledOnMask, uint16_t ledOffMask);
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void pca9532_setBlink0Period(uint8_t period);
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void pca9532_setBlink0Duty(uint8_t duty);
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void pca9532_setBlink0Leds(uint16_t ledMask);
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void pca9532_setBlink1Period(uint8_t period);
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void pca9532_setBlink1Duty(uint8_t duty);
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void pca9532_setBlink1Leds(uint16_t ledMask);
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#endif /* end __PCA9532C_H */
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/****************************************************************************
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** End Of File
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*****************************************************************************/
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