diff options
Diffstat (limited to 'src/ao_btm.c')
| -rw-r--r-- | src/ao_btm.c | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/src/ao_btm.c b/src/ao_btm.c index db0ff6b0..355c3ca4 100644 --- a/src/ao_btm.c +++ b/src/ao_btm.c @@ -208,26 +208,44 @@ ao_btm(void) __xdata struct ao_task ao_btm_task; +#if BT_LINK_ON_P2 +#define BT_PICTL_ICON PICTL_P2ICON +#define BT_PIFG P2IFG +#define BT_PDIR P2DIR +#define BT_PINP P2INP +#define BT_IEN2_PIE IEN2_P2IE +#endif +#if BT_LINK_ON_P1 +#define BT_PICTL_ICON PICTL_P1ICON +#define BT_PIFG P1IFG +#define BT_PDIR P1DIR +#define BT_PINP P1INP +#define BT_IEN2_PIE IEN2_P1IE +#endif + void ao_btm_check_link() __critical { - if (P2_1) { + /* Check the pin and configure the interrupt detector to wait for the + * pin to flip the other way + */ + if (BT_LINK_PIN) { ao_btm_connected = 0; - PICTL |= PICTL_P2ICON; + PICTL |= BT_PICTL_ICON; } else { ao_btm_connected = 1; - PICTL &= ~PICTL_P2ICON; + PICTL &= ~BT_PICTL_ICON; } } void ao_btm_isr(void) { - if (P2IFG & (1 << 1)) { + if (BT_PIFG & (1 << BT_LINK_PIN_INDEX)) { ao_btm_check_link(); ao_wakeup(&ao_btm_connected); } - P2IFG = 0; + BT_PIFG = 0; } void @@ -240,14 +258,26 @@ ao_btm_init (void) * Configure link status line */ - /* Set P2_1 to input, pull-down */ - P2DIR &= ~(1 << 1); - P2INP |= P2INP_MDP2_1_TRISTATE; + /* Set pin to input */ + BT_PDIR &= ~(1 << BT_LINK_PIN_INDEX); + + /* Set pin to tri-state */ + BT_PINP |= (1 << BT_LINK_PIN_INDEX); - /* Enable P2 interrupts */ - IEN2 |= IEN2_P2IE; + /* Enable interrupts */ + IEN2 |= BT_IEN2_PIE; + + /* Check current pin state */ ao_btm_check_link(); + +#if BT_LINK_ON_P2 + /* Eable the pin interrupt */ PICTL |= PICTL_P2IEN; +#endif +#if BT_LINK_ON_P1 + /* Enable pin interrupt */ + P1IEN |= (1 << BT_LINK_PIN_INDEX); +#endif ao_add_task(&ao_btm_task, ao_btm, "bt"); } |