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cc3200: Use the pull up/down resistors on the antenna selection pins.

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This commit is contained in:
Daniel Campora 2015-06-10 12:41:29 +02:00
parent f960d753e4
commit 330e21c986
2 changed files with 24 additions and 18 deletions
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34
cc3200/misc/antenna.c
View File

@ -55,32 +55,24 @@ static antenna_type_t antenna_type_selected = ANTENNA_TYPE_INTERNAL;
DEFINE PUBLIC FUNCTIONS
******************************************************************************/
void antenna_init0(void) {
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA3, PRCM_RUN_MODE_CLK);
// enable the peripheral clock and set the gpio direction for
// both antenna 1 and antenna 2 pins
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA3, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
MAP_GPIODirModeSet(GPIOA3_BASE, 0x0C, GPIO_DIR_MODE_OUT);
// configure PIN_29 for GPIOOutput
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~(PAD_STRENGTH_MASK
| PAD_TYPE_MASK)) | (0x00000020 | 0x00000000 ));
// configure antenna 1 pin type and strength
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~(PAD_STRENGTH_MASK | PAD_TYPE_MASK)) | (0x00000020 | 0x00000000));
// set the mode
HWREG(REG_PAD_CONFIG_26) = (((HWREG(REG_PAD_CONFIG_26) & ~PAD_MODE_MASK) |
0x00000000) & ~(3 << 10));
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~PAD_MODE_MASK) | 0x00000000) & ~(3 << 10);
// set the direction
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~0xC00) | 0x00000800);
// configure PIN_30 for GPIOOutput
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~(PAD_STRENGTH_MASK
| PAD_TYPE_MASK)) | (0x00000020 | 0x00000000 ));
// configure antenna 2 pin type and strength
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~(PAD_STRENGTH_MASK | PAD_TYPE_MASK)) | (0x00000020 | 0x00000000));
// set the mode
HWREG(REG_PAD_CONFIG_27) = (((HWREG(REG_PAD_CONFIG_27) & ~PAD_MODE_MASK) |
0x00000000) & ~(3 << 10));
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~PAD_MODE_MASK) | 0x00000000) & ~(3 << 10);
// set the direction
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_27) & ~0xC00) | 0x00000800);
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~0xC00) | 0x00000800);
// select the currently active antenna
antenna_select(antenna_type_selected);
@ -89,8 +81,14 @@ void antenna_init0(void) {
void antenna_select (antenna_type_t _antenna) {
if (_antenna == ANTENNA_TYPE_INTERNAL) {
MAP_GPIOPinWrite(GPIOA3_BASE, 0x0C, 0x04);
// also configure the pull-up and pull-down accordingly
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PU;
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PD;
} else {
MAP_GPIOPinWrite(GPIOA3_BASE, 0x0C, 0x08);
// also configure the pull-up and pull-down accordingly
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PD;
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PU;
}
antenna_type_selected = _antenna;
}

8
cc3200/mods/pybsleep.c
View File

@ -499,9 +499,17 @@ STATIC void pybsleep_iopark (bool hibernate) {
if (hibernate) {
#endif
// park the antenna selection pins
// (tri-stated with pull down enabled)
HWREG(0x4402E108) = 0x00000E61;
HWREG(0x4402E10C) = 0x00000E61;
#if MICROPY_HW_ANTENNA_DIVERSITY
} else {
// park the antenna selection pins
// (tri-stated without changing the pull up/down resistors)
HWREG(0x4402E108) &= ~0x000000FF;
HWREG(0x4402E108) |= 0x00000C61;
HWREG(0x4402E10C) &= ~0x000000FF;
HWREG(0x4402E10C) |= 0x00000C61;
}
#endif
}