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author | joeycastillo <joeycastillo@utexas.edu> | 2021-08-30 14:42:11 -0400 |
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committer | GitHub <noreply@github.com> | 2021-08-30 14:42:11 -0400 |
commit | eb3d9b26cbda2d2612f11eb39843b221224f1fa7 (patch) | |
tree | 7a514b4d21dd0d2a324a5e1313a144f26bf20799 /tinyusb/hw/bsp/ea4357/pca9532.c | |
parent | ee9cc322d301631c9ff0751d9bed717c6492b6a5 (diff) | |
parent | b0845cc3f1a8234a30c980eccf10e44765e4e105 (diff) | |
download | Sensor-Watch-eb3d9b26cbda2d2612f11eb39843b221224f1fa7.tar.gz Sensor-Watch-eb3d9b26cbda2d2612f11eb39843b221224f1fa7.tar.bz2 Sensor-Watch-eb3d9b26cbda2d2612f11eb39843b221224f1fa7.zip |
Merge pull request #9 from joeycastillo/usb-refactor
USB refactor / Makefile simplification
Diffstat (limited to 'tinyusb/hw/bsp/ea4357/pca9532.c')
-rwxr-xr-x | tinyusb/hw/bsp/ea4357/pca9532.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/ea4357/pca9532.c b/tinyusb/hw/bsp/ea4357/pca9532.c new file mode 100755 index 00000000..eae3805c --- /dev/null +++ b/tinyusb/hw/bsp/ea4357/pca9532.c @@ -0,0 +1,352 @@ +/***************************************************************************** + * + * Copyright(C) 2011, Embedded Artists AB + * All rights reserved. + * + ****************************************************************************** + * Software that is described herein is for illustrative purposes only + * which provides customers with programming information regarding the + * products. This software is supplied "AS IS" without any warranties. + * 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 + * warranty that such application will be suitable for the specified + * use without further testing or modification. + *****************************************************************************/ + +/* + * NOTE: I2C must have been initialized before calling any functions in this + * file. + */ + +/****************************************************************************** + * Includes + *****************************************************************************/ + +//#include "board.h" +#include "chip.h" + +#include "pca9532.h" + +/****************************************************************************** + * Defines and typedefs + *****************************************************************************/ + +#define I2C_PORT (LPC_I2C0) + +#define LS_MODE_ON 0x01 +#define LS_MODE_BLINK0 0x02 +#define LS_MODE_BLINK1 0x03 + +/****************************************************************************** + * External global variables + *****************************************************************************/ + + +/****************************************************************************** + * Local variables + *****************************************************************************/ + +static uint16_t blink0Shadow = 0; +static uint16_t blink1Shadow = 0; +static uint16_t ledStateShadow = 0; + +/****************************************************************************** + * Local Functions + *****************************************************************************/ + +static Status I2CWrite(uint32_t addr, uint8_t* buf, uint32_t len) +{ + I2CM_XFER_T i2cData; + + i2cData.slaveAddr = addr; + i2cData.options = 0; + i2cData.status = 0; + i2cData.txBuff = buf; + i2cData.txSz = len; + i2cData.rxBuff = NULL; + i2cData.rxSz = 0; + + if (Chip_I2CM_XferBlocking(LPC_I2C0, &i2cData) == 0) { + return ERROR; + } + return SUCCESS; +} + +static Status I2CRead(uint32_t addr, uint8_t* buf, uint32_t len) +{ + I2CM_XFER_T i2cData; + + i2cData.slaveAddr = addr; + i2cData.options = 0; + i2cData.status = 0; + i2cData.txBuff = NULL; + i2cData.txSz = 0; + i2cData.rxBuff = buf; + i2cData.rxSz = len; + + if (Chip_I2CM_XferBlocking(LPC_I2C0, &i2cData) == 0) { + return ERROR; + } + return SUCCESS; +} + +static void setLsStates(uint16_t states, uint8_t* ls, uint8_t mode) +{ +#define IS_LED_SET(bit, x) ( ( ((x) & (bit)) != 0 ) ? 1 : 0 ) + + int i = 0; + + for (i = 0; i < 4; i++) { + + ls[i] |= ( (IS_LED_SET(0x0001, states)*mode << 0) + | (IS_LED_SET(0x0002, states)*mode << 2) + | (IS_LED_SET(0x0004, states)*mode << 4) + | (IS_LED_SET(0x0008, states)*mode << 6) ); + + states >>= 4; + } +} + +static void setLeds(void) +{ + uint8_t buf[5]; + uint8_t ls[4] = {0,0,0,0}; + uint16_t states = ledStateShadow; + + /* LEDs in On/Off state */ + setLsStates(states, ls, LS_MODE_ON); + + /* set the LEDs that should blink */ + setLsStates(blink0Shadow, ls, LS_MODE_BLINK0); + setLsStates(blink1Shadow, ls, LS_MODE_BLINK1); + + + buf[0] = PCA9532_LS0 | PCA9532_AUTO_INC; + buf[1] = ls[0]; + buf[2] = ls[1]; + buf[3] = ls[2]; + buf[4] = ls[3]; + I2CWrite(PCA9532_I2C_ADDR, buf, 5); +} + +/****************************************************************************** + * Public Functions + *****************************************************************************/ + +/****************************************************************************** + * + * Description: + * Initialize the PCA9532 Device + * + *****************************************************************************/ +void pca9532_init (void) +{ + /* nothing to initialize */ +} + +/****************************************************************************** + * + * Description: + * Get the LED states + * + * Params: + * [in] shadow - TRUE if the states should be retrieved from the shadow + * variables. The shadow variable are updated when any + * of setLeds, setBlink0Leds and/or setBlink1Leds are + * called. + * + * FALSE if the state should be retrieved from the PCA9532 + * device. A blinkin LED may be reported as on or off + * depending on the state when calling the function. + * + * Returns: + * A mask where a 1 indicates that a LED is on (or blinking). + * + *****************************************************************************/ +uint16_t pca9532_getLedState (uint32_t shadow) +{ + uint8_t buf[2]; + uint16_t ret = 0; + + if (shadow) { + /* a blink LED is reported as on*/ + ret = (ledStateShadow | blink0Shadow | blink1Shadow); + } + else { + + /* + * A blinking LED may be reported as on or off depending on + * its state when reading the Input register. + */ + + buf[0] = PCA9532_INPUT0; + I2CWrite(PCA9532_I2C_ADDR, buf, 1); + + I2CRead(PCA9532_I2C_ADDR, buf, 1); + ret = buf[0]; + + + buf[0] = PCA9532_INPUT1; + I2CWrite(PCA9532_I2C_ADDR, buf, 1); + + I2CRead(PCA9532_I2C_ADDR, buf, 1); + ret |= (buf[0] << 8); + + + /* invert since LEDs are active low */ + ret = ((~ret) & 0xFFFF); + } + + return (ret & ~PCA9532_NOT_USED); +} + + +/****************************************************************************** + * + * Description: + * Set LED states (on or off). + * + * Params: + * [in] ledOnMask - The LEDs that should be turned on. This mask has + * priority over ledOffMask + * [in] ledOffMask - The LEDs that should be turned off. + * + *****************************************************************************/ +void pca9532_setLeds (uint16_t ledOnMask, uint16_t ledOffMask) +{ + /* turn off leds */ + ledStateShadow &= (~(ledOffMask) & 0xffff); + + /* ledOnMask has priority over ledOffMask */ + ledStateShadow |= ledOnMask; + + /* turn off blinking */ + blink0Shadow &= (~(ledOffMask) & 0xffff); + blink1Shadow &= (~(ledOffMask) & 0xffff); + + setLeds(); +} + +/****************************************************************************** + * + * Description: + * Set the blink period for PWM0. Valid values are 0 - 255 where 0 + * means 152 Hz and 255 means 0.59 Hz. A value of 151 means 1 Hz. + * + * Params: + * [in] period - the period for pwm0 + * + *****************************************************************************/ +void pca9532_setBlink0Period(uint8_t period) +{ + uint8_t buf[2]; + + buf[0] = PCA9532_PSC0; + buf[1] = period; + I2CWrite(PCA9532_I2C_ADDR, buf, 2); +} + +/****************************************************************************** + * + * Description: + * Set the duty cycle for PWM0. Valid values are 0 - 100. 25 means the LED + * is on 25% of the period. + * + * Params: + * [in] duty - duty cycle + * + *****************************************************************************/ +void pca9532_setBlink0Duty(uint8_t duty) +{ + uint8_t buf[2]; + uint32_t tmp = duty; + if (tmp > 100) { + tmp = 100; + } + + tmp = (256 * tmp)/100; + + buf[0] = PCA9532_PWM0; + buf[1] = tmp; + I2CWrite(PCA9532_I2C_ADDR, buf, 2); +} + +/****************************************************************************** + * + * Description: + * Set the LEDs that should blink with rate and duty cycle from PWM0. + * Blinking is turned off with pca9532_setLeds. + * + * Params: + * [in] ledMask - LEDs that should blink. + * + *****************************************************************************/ +void pca9532_setBlink0Leds(uint16_t ledMask) +{ + blink0Shadow |= ledMask; + setLeds(); +} + +/****************************************************************************** + * + * Description: + * Set the blink period for PWM1. Valid values are 0 - 255 where 0 + * means 152 Hz and 255 means 0.59 Hz. A value of 151 means 1 Hz. + * + * Params: + * [in] period - The period for PWM1 + * + *****************************************************************************/ +void pca9532_setBlink1Period(uint8_t period) +{ + uint8_t buf[2]; + + buf[0] = PCA9532_PSC1; + buf[1] = period; + I2CWrite(PCA9532_I2C_ADDR, buf, 2); +} + +/****************************************************************************** + * + * Description: + * Set the duty cycle for PWM1. Valid values are 0 - 100. 25 means the LED + * is on 25% of the period. + * + * Params: + * [in] duty - duty cycle. + * + *****************************************************************************/ +void pca9532_setBlink1Duty(uint8_t duty) +{ + uint8_t buf[2]; + + uint32_t tmp = duty; + if (tmp > 100) { + tmp = 100; + } + + tmp = (256 * tmp)/100; + + buf[0] = PCA9532_PWM1; + buf[1] = tmp; + I2CWrite(PCA9532_I2C_ADDR, buf, 2); +} + +/****************************************************************************** + * + * Description: + * Set the LEDs that should blink with rate and duty cycle from PWM1. + * Blinking is turned off with pca9532_setLeds. + * + * Params: + * [in] ledMask - LEDs that should blink. + * + *****************************************************************************/ +void pca9532_setBlink1Leds(uint16_t ledMask) +{ + blink1Shadow |= ledMask; + setLeds(); +} |