diff options
Diffstat (limited to 'src/app/transactiontest')
| -rw-r--r-- | src/app/transactiontest/main.cc | 11 | ||||
| -rw-r--r-- | src/app/transactiontest/util.S | 9 |
2 files changed, 9 insertions, 11 deletions
diff --git a/src/app/transactiontest/main.cc b/src/app/transactiontest/main.cc index 1ca7f67..12d995f 100644 --- a/src/app/transactiontest/main.cc +++ b/src/app/transactiontest/main.cc @@ -2,13 +2,9 @@ #include "driver/gpio.h" #include "driver/stdout.h" #include "driver/uptime.h" -#include "driver/spi_b.h" +#include "driver/spi.h" #include "driver/sharp96.h" -#ifndef TIMER_CYCLES -#error makeflag timer_cycles=1 required -#endif - unsigned char const lynx[12 * 96] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, @@ -117,6 +113,9 @@ extern "C" { uint16_t i = 0; class Transaction { + /** + * Transactions objects must not be nested. + */ public: inline Transaction() { asm_save_all(); } inline ~Transaction() {} @@ -126,7 +125,6 @@ class Transaction { void loop(void) { - gpio.led_toggle(1); { Transaction tx; kout << dec << i << endl; @@ -153,7 +151,6 @@ int main(void) sharp96.setup(); sharp96.powerOn(); - gpio.led_on(0); gpio.input(GPIO::p4_5, 1); asm_load_all(); diff --git a/src/app/transactiontest/util.S b/src/app/transactiontest/util.S index 1a12736..ea298b6 100644 --- a/src/app/transactiontest/util.S +++ b/src/app/transactiontest/util.S @@ -6,6 +6,7 @@ #define SRAM_SIZE 4096 ; SRAM and stack pointer backup space +; two backup areas allow for consistency in case of a power loss during backup sp_backup1: .space 2 sram_backup1: @@ -20,7 +21,8 @@ sram_backup2: backup_cookie: .space 2 -; save entire SRAM and CPU register state to persistent FRAM +; save entire SRAM and CPU register state to persistent FRAM. +; Must be called with interrupts disabled asm_save_all: ; r4 to r11 are callee saved -> push them to the stack. @@ -65,9 +67,8 @@ save_sram_word: ; load entire SRAM and CPU register state from persistent FRAM, ; if it contains valid backup data. Execution will resume at the -; last place where asm_save_all() was called is if nothing in between -; had happened. Does not take possible the state of hardware peripherals -; into account. +; last place where asm_save_all() was called as if nothing in between +; had happened. Does not take the state of hardware peripherals into account. asm_load_all: ; check if we have backup data |