/* --COPYRIGHT--,BSD | |
* Copyright (c) 2014, Texas Instruments Incorporated | |
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* from this software without specific prior written permission. | |
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//***************************************************************************** | |
// | |
// gpio.c - Driver for the gpio Module. | |
// | |
//***************************************************************************** | |
//***************************************************************************** | |
// | |
//! \addtogroup gpio_api gpio | |
//! @{ | |
// | |
//***************************************************************************** | |
#include "inc/hw_regaccess.h" | |
#include "inc/hw_memmap.h" | |
#if defined(__MSP430_HAS_PORT1_R__) || defined(__MSP430_HAS_PORT2_R__) || \ | |
defined(__MSP430_HAS_PORTA_R__) | |
#include "gpio.h" | |
#include <assert.h> | |
static const uint16_t GPIO_PORT_TO_BASE[] = { | |
0x00, | |
#if defined(__MSP430_HAS_PORT1_R__) | |
__MSP430_BASEADDRESS_PORT1_R__, | |
#elif defined(__MSP430_HAS_PORT1__) | |
__MSP430_BASEADDRESS_PORT1__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT2_R__) | |
__MSP430_BASEADDRESS_PORT2_R__, | |
#elif defined(__MSP430_HAS_PORT2__) | |
__MSP430_BASEADDRESS_PORT2__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT3_R__) | |
__MSP430_BASEADDRESS_PORT3_R__, | |
#elif defined(__MSP430_HAS_PORT3__) | |
__MSP430_BASEADDRESS_PORT3__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT4_R__) | |
__MSP430_BASEADDRESS_PORT4_R__, | |
#elif defined(__MSP430_HAS_PORT4__) | |
__MSP430_BASEADDRESS_PORT4__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT5_R__) | |
__MSP430_BASEADDRESS_PORT5_R__, | |
#elif defined(__MSP430_HAS_PORT5__) | |
__MSP430_BASEADDRESS_PORT5__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT6_R__) | |
__MSP430_BASEADDRESS_PORT6_R__, | |
#elif defined(__MSP430_HAS_PORT6__) | |
__MSP430_BASEADDRESS_PORT6__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT7_R__) | |
__MSP430_BASEADDRESS_PORT7_R__, | |
#elif defined(__MSP430_HAS_PORT7__) | |
__MSP430_BASEADDRESS_PORT7__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT8_R__) | |
__MSP430_BASEADDRESS_PORT8_R__, | |
#elif defined(__MSP430_HAS_PORT8__) | |
__MSP430_BASEADDRESS_PORT8__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT9_R__) | |
__MSP430_BASEADDRESS_PORT9_R__, | |
#elif defined(__MSP430_HAS_PORT9__) | |
__MSP430_BASEADDRESS_PORT9__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT10_R__) | |
__MSP430_BASEADDRESS_PORT10_R__, | |
#elif defined(__MSP430_HAS_PORT10__) | |
__MSP430_BASEADDRESS_PORT10__, | |
#else | |
0xFFFF, | |
#endif | |
#if defined(__MSP430_HAS_PORT11_R__) | |
__MSP430_BASEADDRESS_PORT11_R__, | |
#elif defined(__MSP430_HAS_PORT11__) | |
__MSP430_BASEADDRESS_PORT11__, | |
#else | |
0xFFFF, | |
#endif | |
0xFFFF, | |
#if defined(__MSP430_HAS_PORTJ_R__) | |
__MSP430_BASEADDRESS_PORTJ_R__ | |
#elif defined(__MSP430_HAS_PORTJ__) | |
__MSP430_BASEADDRESS_PORTJ__ | |
#else | |
0xFFFF | |
#endif | |
}; | |
void GPIO_setAsOutputPin(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PADIR) |= selectedPins; | |
return; | |
} | |
void GPIO_setAsInputPin(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PAREN) &= ~selectedPins; | |
} | |
void GPIO_setAsPeripheralModuleFunctionOutputPin(uint8_t selectedPort, | |
uint16_t selectedPins | |
, | |
uint8_t mode) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PADIR) |= selectedPins; | |
switch(mode) | |
{ | |
case GPIO_PRIMARY_MODULE_FUNCTION: | |
HWREG16(baseAddress + OFS_PASEL0) |= selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins; | |
break; | |
case GPIO_SECONDARY_MODULE_FUNCTION: | |
HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) |= selectedPins; | |
break; | |
case GPIO_TERNARY_MODULE_FUNCTION: | |
HWREG16(baseAddress + OFS_PASEL0) |= selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) |= selectedPins; | |
break; | |
} | |
} | |
void GPIO_setAsPeripheralModuleFunctionInputPin(uint8_t selectedPort, | |
uint16_t selectedPins | |
, | |
uint8_t mode) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins; | |
switch(mode) | |
{ | |
case GPIO_PRIMARY_MODULE_FUNCTION: | |
HWREG16(baseAddress + OFS_PASEL0) |= selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins; | |
break; | |
case GPIO_SECONDARY_MODULE_FUNCTION: | |
HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) |= selectedPins; | |
break; | |
case GPIO_TERNARY_MODULE_FUNCTION: | |
HWREG16(baseAddress + OFS_PASEL0) |= selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) |= selectedPins; | |
break; | |
} | |
} | |
void GPIO_setOutputHighOnPin(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PAOUT) |= selectedPins; | |
} | |
void GPIO_setOutputLowOnPin(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PAOUT) &= ~selectedPins; | |
} | |
void GPIO_toggleOutputOnPin(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PAOUT) ^= selectedPins; | |
} | |
void GPIO_setAsInputPinWithPullDownResistor(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PAREN) |= selectedPins; | |
HWREG16(baseAddress + OFS_PAOUT) &= ~selectedPins; | |
} | |
void GPIO_setAsInputPinWithPullUpResistor(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins; | |
HWREG16(baseAddress + OFS_PAREN) |= selectedPins; | |
HWREG16(baseAddress + OFS_PAOUT) |= selectedPins; | |
} | |
uint8_t GPIO_getInputPinValue(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
uint16_t inputPinValue = HWREG16(baseAddress + OFS_PAIN) & (selectedPins); | |
if(inputPinValue > 0) | |
{ | |
return (GPIO_INPUT_PIN_HIGH); | |
} | |
return (GPIO_INPUT_PIN_LOW); | |
} | |
void GPIO_enableInterrupt(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PAIE) |= selectedPins; | |
} | |
void GPIO_disableInterrupt(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PAIE) &= ~selectedPins; | |
} | |
uint16_t GPIO_getInterruptStatus(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
return (HWREG16(baseAddress + OFS_PAIFG) & selectedPins); | |
} | |
void GPIO_clearInterrupt(uint8_t selectedPort, | |
uint16_t selectedPins) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
HWREG16(baseAddress + OFS_PAIFG) &= ~selectedPins; | |
} | |
void GPIO_selectInterruptEdge(uint8_t selectedPort, | |
uint16_t selectedPins, | |
uint8_t edgeSelect) { | |
uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort]; | |
#ifndef NDEBUG | |
if(baseAddress == 0xFFFF) | |
{ | |
return; | |
} | |
#endif | |
// Shift by 8 if port is even (upper 8-bits) | |
if((selectedPort & 1) ^ 1) | |
{ | |
selectedPins <<= 8; | |
} | |
if(GPIO_LOW_TO_HIGH_TRANSITION == edgeSelect) | |
{ | |
HWREG16(baseAddress + OFS_PAIES) &= ~selectedPins; | |
} | |
else | |
{ | |
HWREG16(baseAddress + OFS_PAIES) |= selectedPins; | |
} | |
} | |
#endif | |
//***************************************************************************** | |
// | |
//! Close the doxygen group for gpio_api | |
//! @} | |
// | |
//***************************************************************************** |