FreeCalypso > hg > fc-magnetite
comparison src/cs/drivers/drv_core/armio/armio.c @ 680:ee3ac8c617cb
armio.c: set GPIO2 output high initially
On TI-canonical platforms GPIO2 is DCD modem control output. In TI's
original code the AI_InitIOConfig() function called from Init_Target()
would configure GPIO2 as an output and set the initial output value to
low, but then the init code in uartfax.c called from Init_Serial_Flows()
would immediately change it to high, corresponding to DCD not asserted.
The result is a momentary asserted-state glitch on the DCD output.
The present change eliminates this glitch, setting DCD output to
not-asserted initially like it should be.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 25 Jun 2020 03:17:43 +0000 |
| parents | 91d9f8506420 |
| children | 140a0d24a64c |
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| 679:52ee171ff5e4 | 680:ee3ac8c617cb |
|---|---|
| 265 // On the FCDEV3B it also controls the audio amplifier. | 265 // On the FCDEV3B it also controls the audio amplifier. |
| 266 // On the GTM900 GPIOs 0 and 1 are RI and DSR outputs, respectively. | 266 // On the GTM900 GPIOs 0 and 1 are RI and DSR outputs, respectively. |
| 267 // For targets other than GTM900, we enable the audio amplifier | 267 // For targets other than GTM900, we enable the audio amplifier |
| 268 // if we are in an MMI!=0 build - for ACI builds use the AT@SPKR command. | 268 // if we are in an MMI!=0 build - for ACI builds use the AT@SPKR command. |
| 269 #ifdef CONFIG_TARGET_GTM900 | 269 #ifdef CONFIG_TARGET_GTM900 |
| 270 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F01; | 270 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F05; |
| 271 #elif (MMI != 0) || defined(CONFIG_GPIO1_HIGH) | 271 #elif (MMI != 0) || defined(CONFIG_GPIO1_HIGH) |
| 272 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F02; | 272 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F06; |
| 273 #else | 273 #else |
| 274 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F00; | 274 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F04; |
| 275 #endif | 275 #endif |
| 276 | 276 |
| 277 // ARMIO_CNTL_REG register configuration : | 277 // ARMIO_CNTL_REG register configuration : |
| 278 // set IOs 1,2,5,7,9,14 and 15 as ouputs. | 278 // set IOs 1,2,5,7,9,14 and 15 as ouputs. |
| 279 // all others are FreeCalypso additions | 279 // all others are FreeCalypso additions |