annotate cdg3/fflags-conservative.h @ 629:3231dd9b38c1

armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively, and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code for C-Sample and earlier turns them into GPIOs configured as outputs also driving 1 - so far, so good - but TI's code for BOARD 41 (which covers D-Sample, Leonardo and all real world Calypso devices derived from the latter) switches them from MCUEN to GPIOs, but then leaves them as inputs. Given that the hardware powerup state of these two pins is outputs driving 1, every Calypso board design MUST be compatible with such driving; typically these GPIO signals will be either unused and unconnected or connected as outputs driving some peripheral. Turning these pins into GPIO inputs will result in floating inputs on every reasonably-wired board, thus I am convinced that this configuration is nothing but a bug on the part of whoever wrote this code at TI. This floating input bug had already been fixed earlier for GTA modem and FCDEV3B targets; the present change makes the fix unconditional for all "classic" targets. The newly affected targets are D-Sample, Leonardo, Tango and GTM900.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 02 Jan 2020 05:38:26 +0000
parents c15047b3d00d
children
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c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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1 /*
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2 * This version of fflags.h (ccdgen config file) is a FreeCalypso concoction.
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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3 * Here I set all feature flags to OFF in order to create a configuration
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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4 * that mimics the TCS211 program.
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5 */
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c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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7 #undef FF_PS_RSSI
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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8 #undef SIM_PERS
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9 #undef FF_PHONE_LOCK
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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10 #undef TI_PS_FF_AT_CMD_P_ECC
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11 #undef TI_PS_FF_REL99_AND_ABOVE
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12 #undef TI_DUAL_MODE
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13 #undef REL99
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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14 #undef FF_BHO
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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15 #undef TI_PS_FF_EMR
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16 #undef TI_PS_FF_RTD
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17 #undef FF_EGPRS
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18 #undef REL4
c15047b3d00d cdg3: import from freecalypso-citrine/cdg
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19 #undef TI_PS_FF_TBF_EST_PACCH
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20 #undef TI_PS_FF_QUAD_BAND_SUPPORT